AFS is a distributed filesystem that enables co-operating hosts (clients and servers) to efficiently share filesystem resources across both local area and wide area networks.
-The commercial version of AFS is marketed, maintained, and extended by Transarc Corporation.
-
AFS is based on a distributed file system originally developed at the Information Technology Center at Carnegie-Mellon University that was called the "Andrew File System".
-"Andrew" was the name of the research project at CMU - honouring th founders of the University. Once Transarc was formed and AFS became a product, the "Andrew" was dropped to indicate that AFS had gone beyond the Andrew research project and had become a supported, product quality filesystem. However, there were a number of existing cells that rooted their filesystem as /afs. At the time, changing the root of the filesystem was a non-trivial undertaking. So, to save the early AFS sites from having to rename their filesystem, AFS remained as the name and filesystem root.
+"Andrew" was the name of the research project at CMU - honouring the founders of the University. A spin-off company, Transarc Corporation (now part of IBM), started producing and marketing a commercial version of AFS in 1989.
+
+In November, 2000, IBM Open-Sourced AFS, creating [[OpenAFS]]. Development continues to this day.
### <a name="1.02 Who supplies AFS?"></a> 1.02 Who supplies AFS?
-There are currently three sources for AFS: Commercial Transarc (now part of IBM), the open sourced version of former Transarc AFS called [[OpenAFS]] and the independent open source project [[ArlaAFS]].
+[[OpenAFS]] is available from the [[OpenAFS]] website. Additionally, an independant open source project, Arla, supports some clients that [[OpenAFS]] does not. Arla clients are completely compatible with [[OpenAFS]].
+
+IBM no longer markets AFS and has declared an end-of-life for support.
<table border="1" cellpadding="0" cellspacing="0">
<tr>
- <td> 1. </td>
- <td> IBM Pittsburgh Lab </td>
- <td> phone: +1 (412) 667-4400 </td>
- </tr>
- <tr>
- <td> </td>
- <td> 11 Stanwix Street </td>
- <td> fax: +1 (412) 667-6977 </td>
- </tr>
- <tr>
<td> </td>
- <td> Pittsburgh </td>
- <td> email: <a href="mailto:information@transarc.com">information@transarc.com</a></td>
- </tr>
- <tr>
- <td> </td>
- <td> PA 15222 </td>
- <td><a href="mailto:afs-sales@transarc.com">afs-sales@transarc.com</a></td>
- </tr>
- <tr>
- <td> </td>
- <td> United States of America </td>
- <td> WWW: <a href="http://www.transarc.com" target="_top">http://www.transarc.com</a></td>
- </tr>
- <tr>
- <td> 2. </td>
<td>[[Main/OpenAFS]]</td>
<td> WWW: <a href="http://www.openafs.org/" target="_top">http://www.openafs.org/</a></td>
</tr>
<tr>
- <td> 3. </td>
- <td>[[Main/ArlaAFS]]</td>
+ <td> </td>
+ <td> Arla </td>
<td> WWW: <a href="http://www.stacken.kth.se/projekt/arla/" target="_top">http://www.stacken.kth.se/projekt/arla/</a></td>
</tr>
</table>
#### <a name="1.05.c Scalability"></a> 1.05.c Scalability
-With location independence comes scalability. An architectural goal of the AFS designers was client/server ratios of 200:1 which has been successfully exceeded at some sites. Transarc do not recommend customers use the 200:1 ratio. A more cautious value of 50:1 is expected to be practical in most cases. It is certainly possible to work with a ratio somewhere between these two values. Exactly what value depends on many factors including: number of AFS files, size of AFS files, rate at which changes are made, rate at which file are being accessed, speed of servers processor, I/O rates, and network bandwidth.
+With location independence comes scalability. An architectural goal of the AFS designers was client/server ratios of 200:1 which has been successfully exceeded at some sites. Some sites are exceeding this ratio. Exactly what ratio your cell can use depends on many factors including: number of AFS files, size of AFS files, rate at which changes are made, rate at which file are being accessed, speed of servers processor, I/O rates, and network bandwidth.
AFS cells can range from the small (1 server/client) to the massive (with tens of servers and thousands of clients). Cells can be dynamic: it is simple to add new fileservers or clients and grow the computing resources to meet new user requirements.
### <a name="1.06 Which systems is AFS avail"></a> 1.06 Which systems is AFS available for?
-AFS runs on systems from: HP, Compaq, IBM, SUN, SGI, Apple ([[MacOSX]]) and PCs with flavours of Unix.
-
-AFS has been available for Next and DEC (Ultrix).
-
-Transarc customers have done ports to Crays, and the 3090, but all are based on some flavour of unix. Some customers have done work to make AFS data available to PCs and Macs, although they are using something similar to the AFS/NFS translator (a system that enables "NFS only" clients to NFS mount the AFS filetree /afs).
-
-There is a client only implementation "AFS Client for Windows/NT".
-
-A page describing the current systems for which AFS is supported may be found at:
-
-- <http://www.transarc.com/Support/afs/relversions/platforms.html>
-
-There are also ports of AFS done by customers available from Transarc on an "as is" unsupported basis.
+[[OpenAFS]] (as of the 1.4.2 release) is currently available in binary releases for: IBM AIX 5.1, 5.2, 5.3 Fedora Core 3, 4, 5 (Intel) [[FreeBSD]] 6.1 (Intel) HP/UX 11i (PA-RISC) SGI Irix 6.5 [[MacOS]] X 10.4 Tiger (Universal) [[OpenBSD]] 3.9 (Intel) RHEL 3, 4 (Intel) RHEL 4 (AMD64) Solaris 7, 8, 9, 10 (Sparc) Solaris 8, 9, 10 (Intel) Windows 2000/XP/2003
-More information on this can be found at:
+The sources are also known to create working binaries for [[NetBSD]] 2.\* and 3.0 (server only).
-- <file:///afs/transarc.com/public/afs-contrib/bin/README>
-- <ftp://ftp.transarc.com/pub/afs-contrib/bin/README>
+Additional platforms may be available in the beta (1.5) tree.
-These ports of AFS client code include:
+Arla (as of the 0.43 release) is currently supporting: [[FreeBSD]] 5.1-5.5 [[NetBSD]] 2.\*, 3.0 Linux 2.4.x and 2.6.x [[MacOSX]] 10.4
-- HP (Apollo) Domain OS - by Jim Rees at the University of Michigan.
-- sun386i - by Derek Atkins and Chris Provenzano at MIT.
-- Linux - by Derek Atkins, mailing list: <linux-afs-request@mit.edu> <http://www.mit.edu:8008/menelaus/linux-afs/>
-- [[NetBSD]] - by John Kohl, mailing list: <netbsd-afs@mit.edu>
-
-There is some information about AFS on OS/2 at:
-
-- <http://www.club.cc.cmu.edu/~jgrande/afsos2.html>
-
-The AFS on Linux FAQ may be found at:
-
-- <http://www.umlug.umd.edu/linuxafs/>
-
-Check out the [[OpenAFS]] and [[ArlaAFS]] pages for port avilablity.
+Please see the Arla web pages for more details, and remember that Arla is client only.
### <a name="1.07 What does "ls /afs" displa"></a> 1.07 What does "ls /afs" display in the Internet AFS filetree?
The definitive source for this information is:
-- <file:///afs/transarc.com/service/etc/CellServDB.export>
-
-I've included the list of cell names included in it below:
-
- asu.edu #ASU
- uni-freiburg.de #Albert-Ludwigs-Universitat Freiburg
- anl.gov #Argonne National Laboratory
- fl.mcs.anl.gov # Argonne National Laboratory MCS Division FL
- dapnia.saclay.cea.fr #Axlan-CEA
- bcc.ac.uk #Bloomsbury Computing Consortium
- bu.edu #Boston University
- cs.brown.edu #Brown University Department of Computer Science
- caspur.it #CASPUR Inter-University Computing Consortium,Rome
- ciesin.org #CIESIN
- mathematik-cip.uni-stuttgart.de #CIP-Pool of Math. Dept, Univ. Stuttgart
- gg.caltech.edu #Caltech Computer Graphics Group
- cards.com #Cards - Electronic Warfare Associates
- cheme.cmu.edu #Carnegie Mellon Univ. Chemical Engineering Dept.
- cmu.edu #Carnegie Mellon University
- andrew.cmu.edu #Carnegie Mellon University - Campus
- ce.cmu.edu #Carnegie Mellon University - Civil Eng. Dept.
- ece.cmu.edu #Carnegie Mellon University - Elec. Comp. Eng. Dept.
- me.cmu.edu #Carnegie Mellon University - Mechanical Engineering
- cs.cmu.edu #Carnegie Mellon University - School of Comp. Sci.
- club.cc.cmu.edu #Carnegie Mellon University Computer Club
- cert.org #CERT/Coordination Center
- others.chalmers.se #Chalmers University of Technology - General users
- cipool.uni-stuttgart.de #CIP Pool, Rechenzentrum University of Stuttgart
- clarkson.edu #Clarkson University, Potsdam, USA
- msc.cornell.edu #Cornell University Materials Science Center
- graphics.cornell.edu #Cornell University Program of Computer Graphics
- theory.cornell.edu #Cornell University Theory Center
- ifh.de #DESY-IfH Zeuthen
- northstar.dartmouth.edu #Dartmouth College, Project Northstar
- desy.de #Deutsches Elektronen-Synchrotron
- dkrz.de #Deutsches Klimarechenzentrum Hamburg
- dis.uniroma1.it #DIS, Univ. "La Sapienza", Rome, area Buonarotti
- msrc.pnl.gov #EMSL's AFS Cell
- zdvpool.uni-tuebingen.de#Eberhard-Karls-Universitaet Tuebingen, WS-Pools
- enea.it #enea.it
- es.net #Energy Sciences Net
- research.ec.org #Esprit Research Network of Excellence
- dce.emsl.pnl.gov #EMSL's DCE Cell
- cern.ch #European Laboratory for Particle Physics, Geneva
- fnal.gov #Fermi National Acclerator Laboratory
- fh-heilbronn.de #Fachhochschule Heilbronn
- hephy.at #hephy-vienna
- sleeper.nsa.hp.com #HP Cupertino
- palo_alto.hpl.hp.com #HP Palo Alto
- afs.hursley.ibm.com #IBM Hursley Laboratories (UK), external cell
- ibm.uk #IBM UK, AIX Systems Support Centre
- zurich.ibm.ch #IBM Zurich Internet Cell
- ctp.se.ibm.com #IBM/4C, Chalmers, Sweden
- ipp-hgw.mpg.de #IPP site at Greifswald
- in2p3.fr #IN2P3 production cell
- lngs.infn.it #INFN Laboratori Nazionali di Gran Sasso, Italia
- le.infn.it #INFN Sezione di Lecce, Italia
- pi.infn.it #INFN Sezione di Pisa
- ike.uni-stuttgart.de #Institut fuer Kernenergetik, Universitaet Stuttgart
- ipp-garching.mpg.de #Institut fuer Plasmaphysik
- csv.ica.uni-stuttgart.de #Institut fuer Computeranwendungen, Uni. Stuttgart
- iastate.edu #Iowa State University
- infn.it #Istituto Nazionale di Fisica Nucleare, Italia
- jpl.nasa.gov #Jet Propulsion Laboratory
- zdv.uni-mainz.de #Johannes-Gutenberg-Universitaet Mainz
- isk.kth.se #KTH College of Engineering
- cc.keio.ac.jp #Keio University, Fac. of Sci. & Tech. Computing Ctr
- sfc.keio.ac.jp #Keio University, Japan
- afs-math.zib-berlin.de #Konrad-Zuse-Zentrum fuer Informationstechnik Berlin
- thermo-a.mw.tu-muenchen.de #Lehrstuhl A fuer Thermodynamik,TUM
- lrz-muenchen.de #Leibniz-Rechenzentrum Muenchen Germany
- athena.mit.edu #MIT/Athena cell
- net.mit.edu #MIT/Network Group cell
- sipb.mit.edu #MIT/SIPB cell
- msu.edu #Michigan State University home cell
- mpa-garching.mpg.de #Max-Planck-Institut fuer Astrophysik
- federation.atd.net #Multi Resident AFS at Naval Research Lab - CCS
- isl.ntt.jp #NTT Information and Communication
- nersc.gov #National Energy Research Supercomputer Center
- alw.nih.gov #National Institutes of Health
- nrel.gov #National Renewable Energy Laboratory
- cmf.nrl.navy.mil #Naval Research Lab
- lcp.nrl.navy.mil #Naval Research Lab - Lab for Computational Physics
- nrlfs1.nrl.navy.mil #Naval Research Laboratory
- eos.ncsu.edu #NCSU - College of Engineering
- unity.ncsu.edu #NCSU Campus
- ncat.edu #North Carolina Agricultural and Technical State U.
- bp.ncsu.edu #North Carolina State University - Backbone Prototype
- ri.osf.org #OSF Research Institute
- gr.osf.org #OSF Research Institute, Grenoble
- urz.uni-magdeburg.de #Otto-von-Guericke-Universitaet, Magdeburg
- N ovpit.indiana.edu #OVPIT at Indiana University
- psc.edu #PSC (Pittsburgh Supercomputing Center)
- psu.edu #Penn State
- phy.bnl.gov #Physics Deptpartment, Brookhaven National Lab
- postech.ac.kr #Pohang University of Science
- pppl.gov #Princeton Plasma Physics Laboratory
- rwcp.or.jp #Real World Computer Partnership(rwcp)
- rz.uni-jena.de #Rechenzentrum University of Jena, Germany
- rhrk.uni-kl.de #Rechenzentrum University of Kaiserslautern
- rus.uni-stuttgart.de #Rechenzentrum University of Stuttgart
- rhic #Relativistic Heavy Ion Collider
- rpi.edu #Rensselaer Polytechnic Institute
- uni-bonn.de #Rheinische Friedrich Wilhelm Univesitaet Bonn
- rose-hulman.edu #Rose-Hulman Institute of Technology
- cs.rose-hulman.edu # Rose-Hulman Inst. of Tech., CS Department
- nada.kth.se #Royal Institute of Technology, NADA
- rl.ac.uk #Rutherford Appleton Lab, England
- slac.stanford.edu #Stanford Linear Accelerator Center
- dsg.stanford.edu #Stanford Univ. - Comp. Sci. - Distributed Systems
- ir.stanford.edu #Stanford University
- afs1.scri.fsu.edu #Supercomputer Computations Research Instit
- ethz.ch #Swiss Federal Inst. of Tech. - Zurich, Switzerland
- hrzone.th-darmstadt.de #TH-Darmstadt
- tu-bs.de #Technical University of Braunschweig, Germany
- tu-chemnitz.de #Technische Universitaet Chemnitz-Zwickau, Germany
- telos.com #Telos Systems Group - Chantilly, Va.
- transarc.com #Transarc Corporation
- cats.ucsc.edu #UC Santa Cruz, Comp and Tech Services, California
- umr.edu #UMR - Missouri's Technological University
- hep.net #US High Energy Physics Information cell
- uni-mannheim.de #Uni Mannheim (Rechenzentrum)
- ece.ucdavis.edu #Univ California - Davis campus
- geo.uni-koeln.de #Univ. of Cologne Inst. for Geophysics & Meteorology
- meteo.uni-koeln.de #Univ. of Cologne Inst. for Geophysics & Meteorology
- N dsi.uniroma1.it #Univ. Rome-1, Dept. of Computer Science
- U spv.uniroma1.it #Univ. Rome-1, Area San Pietro in Vincoli
- N vn.uniroma3.it #Univ. Rome-3, Area Vasca Navale
- urz.uni-heidelberg.de #Universitaet Heidelberg
- spc.uchicago.edu #University of Chicago - Social Sciences
- rrz.uni-koeln.de #University of Cologne - Reg Comp Center
- wu-wien.ac.at #University of Economics, Vienna, Austria
- uni-hohenheim.de #University of Hohenheim
- ncsa.uiuc.edu #University of Illinois
- wam.umd.edu #University of Maryland Network WAM Project
- glue.umd.edu #University of Maryland - Project Glue
- engin.umich.edu #University of Michigan - CAEN
- umich.edu #University of Michigan - Campus
- dmsv.med.umich.edu #University of Michigan - DMSV
- citi.umich.edu #University of Michigan - IFS Development
- lsa.umich.edu #University of Michigan - LSA College
- math.lsa.umich.edu #University of Michigan - Math Cell
- sph.umich.edu #University of Michigan -- School of Public
- cs.unc.edu #University of North Carolina at Chapel Hill
- nd.edu #University of Notre Dame
- pitt.edu #University of Pittsburgh
- vn.uniroma3.it #University of Rome 3, Area Vasca Navale, Italy
- isi.edu #University of Southern California/ISI
- dce.uni-stuttgart.de #University of Stuttgart - DCE/DFS Cell
- ihf.uni-stuttgart.de #University of Stuttgart, Ins. fuer Hochfrequenz-Tec
- mathematik.uni-stuttgart.de #University of Stuttgart, Math Dept.
- cs.utah.edu #University of Utah Computer Science Dept
- utah.edu #University of Utah Information Tech. Service
- cs.washington.edu #University of Washington Comp Sci Department
- wisc.edu #University of Wisconsin-Madison, Campus
- cs.wisc.edu #University of Wisconsin-Madison, Comp Sci Dept
- belwue.uni-tuebingen.de #ZDV Universitaet Tuebingen
-
-This shows different and widespread organizations making use of the Internet AFS filetree.
+- <file:///afs/grand.central.org/service/CellServDB>
Note that it is also possible to use AFS "behind the firewall" within the confines of your organization's network - you don't have to participate in the Internet AFS filetree.
Kerberos uses the idea of a trusted third party to prove identification. This is a bit like using a letter of introduction or quoting a referee who will vouch for you.
-When a user authenticates using the klog command (s)he is prompted for a password. If the password is accepted the Kerberos Authentication Server (KAS) provides the user with an encrypted token (containing a "ticket granting ticket").
+When a user authenticates using the klog command (s)he is prompted for a password. If the password is accepted the Kerberos server provides the user with an encrypted token (containing a "ticket granting ticket").
From that point on, it is the encrypted token that is used to prove the user's identity. These tokens have a limited lifetime (typically a day) and are useless when expired.
AFS uses Kerberos to do complex mutual authentication which means that both the service requester and the service provider have to prove their identities before a service is granted.
-Transarc's implementation of Kerberos is slightly different from MIT Kerberos V4 but AFS can work with either version. Joe Jackson wrote about this in: <http://www.cs.cmu.edu/afs/andrew.cmu.edu/usr/shadow/www/afs/afs-with-kerberos.html>
+Originally AFS shipped with it's own version of a Kerberos, called "KAS." KAS still ships at this time (1.4.2 release) but is depricated in favor of using a true Kerberos 5 implimentation. [[OpenAFS]] does not currently ship with a K5 install; it is up to the administrator(s) to choose a version (either MIT's or KTH's "Heimdal") and install it. [[OpenAFS]] will happily work with either.
For more detail on this and other Kerberos issues see the faq for Kerberos (posted to news.answers and comp.protocols.kerberos) [[[Jaspan|Main/FurtherReading#Jaspan]]]. (Also, see [[[Miller87|Main/FurtherReading#Miller87]]], [[[Bryant88|Main/FurtherReading#Bryant88]]], [[[Bellovin90|Main/FurtherReading#Bellovin90]]], [[[Steiner88|Main/FurtherReading#Steiner88]]])
### <a name="1.10 How can I access AFS from"></a><a name="1.10 How can I access AFS from "></a> 1.10 How can I access AFS from my PC?
-You can use the native Windows AFS Clients.
+You can use [[OpenAFS]] for Windows client. In the past year it has become very stable and robust. [[OAfW]] works with Kerberos for Windows in much the same way the Unix clients work with Kerberos.
There is also SAMBA (a SMB server for UNIX).
- The AFS Cache Manager can be configured to work with a RAM (memory) based cache. This offers signifigant performance benefits over a disk based cache. NFS has no such feature. Imagine how much faster it is to access files cached into RAM!
- The Andrew benchmark demonstrates that AFS has better performance than NFS as the number of clients increases. A graph of this (taken from Andrew benchmark report) is available in:
- - 
-
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[http://www.shop263.com/i-1/694.htm 硝酸异丙酯] [http://www.shop263.com/i-1/695.htm 硝酸益康唑] [http://www.shop263.com/i-1/696.htm 小球硅胶] [http://www.shop263.com/i-1/697.htm 鞋模胶] [http://www.shop263.com/i-1/698.htm 心安得] [http://www.shop263.com/i-1/699.htm 辛二胺] [http://www.shop263.com/i-1/700.htm 辛酸亚锡] [http://www.shop263.com/i-1/701.htm 辛酰氯] [http://www.shop263.com/i-1/702.htm 锌粒] [http://www.shop263.com/i-1/703.htm 锌渣锌灰] [http://www.shop263.com/i-1/704.htm 新戊二醇] [http://www.shop263.com/i-1/705.htm 新型活性剂驱油剂] [http://www.shop263.com/i-1/706.htm 猩红酸] [http://www.shop263.com/i-1/707.htm 熊果苷] [http://www.shop263.com/i-1/708.htm 熊果苷单酯] [http://www.shop263.com/i-1/709.htm 溴苯] [http://www.shop263.com/i-1/710.htm 溴丙烷] [http://www.shop263.com/i-1/711.htm 溴代环戊烷] [http://www.shop263.com/i-1/712.htm 溴代金刚烷] [http://www.shop263.com/i-1/713.htm 溴代叔丁烷] [http://www.shop263.com/i-1/714.htm 溴代羧酸酯] [http://www.shop263.com/i-1/715.htm 溴代烃] [http://www.shop263.com/i-1/716.htm 溴代烷烃] [http://www.shop263.com/i-1/717.htm 溴代异丙烷] [http://www.shop263.com/i-1/718.htm 溴代异丁烷] [http://www.shop263.com/i-1/719.htm 溴代毓] [http://www.shop263.com/i-1/720.htm 溴代正丙烷] [http://www.shop263.com/i-1/721.htm 溴丁烷] [http://www.shop263.com/i-1/722.htm 溴化氨] [http://www.shop263.com/i-1/723.htm 溴化铵] [http://www.shop263.com/i-1/724.htm 溴化丁基胶] [http://www.shop263.com/i-1/725.htm 溴化钙] [http://www.shop263.com/i-1/726.htm 溴化钾] [http://www.shop263.com/i-1/727.htm 溴化锂] [http://www.shop263.com/i-1/728.htm 溴化镁] [http://www.shop263.com/i-1/729.htm 溴化锰] [http://www.shop263.com/i-1/730.htm 溴化钠] [http://www.shop263.com/i-1/731.htm 溴化锌] [http://www.shop263.com/i-1/732.htm 溴甲基萘] [http://www.shop263.com/i-1/733.htm 溴类阻燃剂] [http://www.shop263.com/i-1/734.htm 溴素] [http://www.shop263.com/i-1/735.htm 溴酸钠] [http://www.shop263.com/i-1/736.htm 溴西烷] [http://www.shop263.com/i-1/737.htm 溴硝醇] [http://www.shop263.com/i-1/738.htm 溴盐及溴酸盐] [http://www.shop263.com/i-1/739.htm 溴乙烷] [http://www.shop263.com/i-1/740.htm 溴乙酰溴] [http://www.shop263.com/i-1/741.htm 絮凝剂] [http://www.shop263.com/i-1/742.htm 蓄电池酸] [http://www.shop263.com/i-1/743.htm 悬浮剂] [http://www.shop263.com/i-1/744.htm 循环系统油] [http://www.shop263.com/i-1/745.htm 压敏胶] [http://www.shop263.com/i-1/746.htm 亚氨基二苄] [http://www.shop263.com/i-1/747.htm 亚氨基二乙酸] [http://www.shop263.com/i-1/748.htm 亚氨基二乙酸二钠盐] [http://www.shop263.com/i-1/749.htm 亚氨基二乙酸二乙酯] [http://www.shop263.com/i-1/750.htm 亚氨基芪甲酰] [http://www.shop263.com/i-1/751.htm 亚白刚玉] [http://www.shop263.com/i-1/752.htm 亚甲基双丙烯酰胺] [http://www.shop263.com/i-1/753.htm 亚磷酸] [http://www.shop263.com/i-1/754.htm 亚磷酸二甲酯] [http://www.shop263.com/i-1/755.htm 亚磷酸二乙酯] [http://www.shop263.com/i-1/756.htm 亚磷酸二正丁酯] [http://www.shop263.com/i-1/757.htm 亚磷酸三苯酯] [http://www.shop263.com/i-1/758.htm 亚磷酸一苯二异辛酯] [http://www.shop263.com/i-1/759.htm 亚磷酸酯] [http://www.shop263.com/i-1/760.htm 亚硫酸钠] [http://www.shop263.com/i-1/761.htm 亚硫酸氢铵] [http://www.shop263.com/i-1/762.htm 亚硫酸氢钠] [http://www.shop263.com/i-1/763.htm 亚氯酸钠] [http://www.shop263.com/i-1/764.htm 亚麻酸] [http://www.shop263.com/i-1/765.htm 亚么尼亚胶浆] [http://www.shop263.com/i-1/766.htm 亚铁氰化钾] [http://www.shop263.com/i-1/767.htm 亚硝基铁氢化钾] [http://www.shop263.com/i-1/768.htm 亚硝基铁氢化钠] [http://www.shop263.com/i-1/769.htm 亚硝基愈创木酚] [http://www.shop263.com/i-1/770.htm 亚硝酸钙] [http://www.shop263.com/i-1/771.htm 亚硝酸钠] [http://www.shop263.com/i-1/772.htm 烟酰胺] [http://www.shop263.com/i-1/773.htm 岩石水胶炸药] [http://www.shop263.com/i-1/774.htm 岩藻聚糖硫酸脂] [http://www.shop263.com/i-1/775.htm 盐酸] [http://www.shop263.com/i-1/776.htm 盐酸安非他酮] [http://www.shop263.com/i-1/777.htm 盐酸苄丝肼] [http://www.shop263.com/i-1/778.htm 盐酸胍] [http://www.shop263.com/i-1/779.htm 盐酸环胞苷] [http://www.shop263.com/i-1/780.htm 盐酸洛美沙星] [http://www.shop263.com/i-1/781.htm 盐酸羟胺] [http://www.shop263.com/i-1/782.htm 盐酸羟亚胺] [http://www.shop263.com/i-1/783.htm 盐酸舍曲林] [http://www.shop263.com/i-1/784.htm 盐酸万拉法新] [http://www.shop263.com/i-1/785.htm 盐酸西替利嗪] [http://www.shop263.com/i-1/786.htm 颜料] [http://www.shop263.com/i-1/787.htm 颜料糊] [http://www.shop263.com/i-1/788.htm 颜料中间体] [http://www.shop263.com/i-1/789.htm 阳离子染料] [http://www.shop263.com/i-1/790.htm 杨酸钠] [http://www.shop263.com/i-1/791.htm 氧化淀粉] [http://www.shop263.com/i-1/792.htm 氧化锆] [http://www.shop263.com/i-1/793.htm 氧化铬绿] [http://www.shop263.com/i-1/794.htm 氧化合成氢氰酸] [http://www.shop263.com/i-1/795.htm 氧化镧] [http://www.shop263.com/i-1/796.htm 氧化铝粉] [http://www.shop263.com/i-1/797.htm 氧化镁] [http://www.shop263.com/i-1/798.htm 氧化镍] [http://www.shop263.com/i-1/799.htm 氧化铁] [http://www.shop263.com/i-1/800.htm 氧化銅] [http://www.shop263.com/i-1/801.htm 氧化鋅] [http://www.shop263.com/i-1/802.htm 氧氯化锆] [http://www.shop263.com/i-1/803.htm 氧杂环戊烷] [http://www.shop263.com/i-1/804.htm 药用级醋酸钠] [http://www.shop263.com/i-1/805.htm 药用水杨酸] [http://www.shop263.com/i-1/806.htm 椰油脂肪酸] [http://www.shop263.com/i-1/807.htm 椰子油基酰] [http://www.shop263.com/i-1/808.htm 椰子油甲酯] [http://www.shop263.com/i-1/809.htm 冶金焦] [http://www.shop263.com/i-1/800.htm 冶金铸焦] [http://www.shop263.com/i-1/811.htm 冶炼氧化锌] [http://www.shop263.com/i-1/812.htm 叶酸] [http://www.shop263.com/i-1/813.htm 液氨] [http://www.shop263.com/i-1/814.htm 液晶化学品] [http://www.shop263.com/i-1/815.htm 液氯] [http://www.shop263.com/i-1/816.htm 液萘] [http://www.shop263.com/i-1/817.htm 液体丙烯酰胺] [http://www.shop263.com/i-1/818.htm 液体二氧化硫] [http://www.shop263.com/i-1/819.htm 液体氦] [http://www.shop263.com/i-1/820.htm 液体混合氯化稀土] [http://www.shop263.com/i-1/821.htm 液体硫酸羟胺] [http://www.shop263.com/i-1/822.htm 液体氰化钠] [http://www.shop263.com/i-1/823.htm 液体三氧化硫] [http://www.shop263.com/i-1/824.htm 液体无水氨] [http://www.shop263.com/i-1/825.htm 液体盐酸胍] [http://www.shop263.com/i-1/826.htm 液体油墨凝胶剂] [http://www.shop263.com/i-1/827.htm 液状石蜡] [http://www.shop263.com/i-1/828.htm 一氟三氯甲烷] [http://www.shop263.com/i-1/829.htm 一甲基肼] [http://www.shop263.com/i-1/830.htm 一氯化硫] [http://www.shop263.com/i-1/831.htm 一氯频呐酮] [http://www.shop263.com/i-1/832.htm 一氯乙酸] [http://www.shop263.com/i-1/833.htm 一氧化碳] [http://www.shop263.com/i-1/834.htm 一正丙胺] [http://www.shop263.com/i-1/835.htm 衣车润滑油] [http://www.shop263.com/i-1/836.htm 衣康酸] [http://www.shop263.com/i-1/837.htm 医药原料] [http://www.shop263.com/i-1/838.htm 医药原料药] [http://www.shop263.com/i-1/839.htm 医药中间体] [http://www.shop263.com/i-1/840.htm 医用胶囊] [http://www.shop263.com/i-1/841.htm 移印矽胶] [http://www.shop263.com/i-1/842.htm 乙胺] [http://www.shop263.com/i-1/843.htm 乙醇钠乙醇溶液] [http://www.shop263.com/i-1/844.htm 乙二氨四醋酸] [http://www.shop263.com/i-1/845.htm 乙二胺] [http://www.shop263.com/i-1/846.htm 乙二胺四乙酸] [http://www.shop263.com/i-1/847.htm 乙二胺四乙酸二钠] [http://www.shop263.com/i-1/848.htm 乙二醇] [http://www.shop263.com/i-1/849.htm 乙二醇醋酸酯] [http://www.shop263.com/i-1/850.htm 乙二醇单正丙醚] [http://www.shop263.com/i-1/851.htm 乙二醇丁醚] [http://www.shop263.com/i-1/852.htm 乙二醇二甲醚] [http://www.shop263.com/i-1/853.htm 乙二醇二甲酸酯] [http://www.shop263.com/i-1/854.htm 乙二醛] [http://www.shop263.com/i-1/855.htm 乙二酸锶] [http://www.shop263.com/i-1/856.htm 乙基] [http://www.shop263.com/i-1/857.htm 乙基胺] [http://www.shop263.com/i-1/858.htm 乙基苯] [http://www.shop263.com/i-1/859.htm 乙基苯胺] [http://www.shop263.com/i-1/860.htm 乙基丁基甲酮] [http://www.shop263.com/i-1/861.htm 乙基防染盐] [http://www.shop263.com/i-1/862.htm 乙基黄药] [http://www.shop263.com/i-1/863.htm 乙基黄原酸钾] [http://www.shop263.com/i-1/864.htm 乙基磺酰氯] [http://www.shop263.com/i-1/865.htm 乙基已基磷酸] [http://www.shop263.com/i-1/866.htm 乙基已基酯] [http://www.shop263.com/i-1/867.htm 乙基已酸铝] [http://www.shop263.com/i-1/868.htm 乙腈] [http://www.shop263.com/i-1/869.htm 乙硫氮] [http://www.shop263.com/i-1/870.htm 乙醛酸] [http://www.shop263.com/i-1/871.htm 乙醛酸产] [http://www.shop263.com/i-1/872.htm 乙酸柏木酯] [http://www.shop263.com/i-1/873.htm 乙酸芳樟酯] [http://www.shop263.com/i-1/874.htm 乙烷磺酸] [http://www.shop263.com/i-1/875.htm 乙烯基吡咯烷酮] [http://www.shop263.com/i-1/876.htm 乙烯基官能团硅烷] [http://www.shop263.com/i-1/877.htm 乙烯基甲醚] [http://www.shop263.com/i-1/878.htm 乙烯基三甲氧基硅烷] [http://www.shop263.com/i-1/879.htm 乙烯基三乙氧基硅烷] 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