BR9707485A - Oleo lubrificante para refrigeradores do tipo compressão - Google Patents

Oleo lubrificante para refrigeradores do tipo compressão

Info

Publication number
BR9707485A
BR9707485A BR9707485A BR9707485A BR9707485A BR 9707485 A BR9707485 A BR 9707485A BR 9707485 A BR9707485 A BR 9707485A BR 9707485 A BR9707485 A BR 9707485A BR 9707485 A BR9707485 A BR 9707485A
Authority
BR
Brazil
Prior art keywords
lubricating oil
compression type
type refrigerators
refrigerators
compression
Prior art date
Application number
BR9707485A
Other languages
English (en)
Inventor
Tatsuya Egawa
Hirotara Yamasaki
Kenji Mogami
Satoshi Nagao
Toyokazu Handa
Masato Kaneko
Original Assignee
Idemitsu Kosan Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Idemitsu Kosan Co filed Critical Idemitsu Kosan Co
Publication of BR9707485A publication Critical patent/BR9707485A/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/20—Lubricating compositions characterised by the base-material being a macromolecular compound containing oxygen
    • C10M107/22—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M107/24—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an alcohol, aldehyde, ketonic, ether, ketal or acetal radical
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
    • C10M171/008—Lubricant compositions compatible with refrigerants
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an alcohol or ester thereof; bound to an aldehyde, ketonic, ether, ketal or acetal radical
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/06—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an acyloxy radical of saturated carboxylic or carbonic acid
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/06—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an acyloxy radical of saturated carboxylic or carbonic acid
    • C10M2209/062—Vinyl esters of saturated carboxylic or carbonic acids, e.g. vinyl acetate
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2211/00—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2211/02—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only
    • C10M2211/022—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only aliphatic
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2211/00—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2211/06—Perfluorinated compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2213/04—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions obtained from monomers containing carbon, hydrogen, halogen and oxygen
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2213/06—Perfluoro polymers
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/30—Refrigerators lubricants or compressors lubricants
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/32—Wires, ropes or cables lubricants
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/34—Lubricating-sealants
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/36—Release agents or mold release agents
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/38—Conveyors or chain belts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/40—Generators or electric motors in oil or gas winning field
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/42—Flashing oils or marking oils
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/44—Super vacuum or supercritical use
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/50—Medical uses

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Lubricants (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
BR9707485A 1996-02-05 1997-02-04 Oleo lubrificante para refrigeradores do tipo compressão BR9707485A (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP1883796 1996-02-05
JP29687196A JP4112645B2 (ja) 1996-02-05 1996-11-08 圧縮型冷凍機用潤滑油
PCT/JP1997/000271 WO1997028236A1 (fr) 1996-02-05 1997-02-04 Huile lubrifiante pour refrigerateurs a compression

Publications (1)

Publication Number Publication Date
BR9707485A true BR9707485A (pt) 1999-07-27

Family

ID=26355571

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9707485A BR9707485A (pt) 1996-02-05 1997-02-04 Oleo lubrificante para refrigeradores do tipo compressão

Country Status (12)

Country Link
US (1) US6261474B1 (pt)
EP (1) EP0882779B1 (pt)
JP (1) JP4112645B2 (pt)
KR (1) KR100470623B1 (pt)
CN (1) CN1075108C (pt)
AU (1) AU721587B2 (pt)
BR (1) BR9707485A (pt)
DE (1) DE69729279T2 (pt)
MY (1) MY128055A (pt)
RU (1) RU2199576C2 (pt)
TW (1) TW419520B (pt)
WO (1) WO1997028236A1 (pt)

Families Citing this family (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3557053B2 (ja) * 1996-09-30 2004-08-25 三洋電機株式会社 冷媒圧縮機
KR100476400B1 (ko) 1996-11-27 2005-03-16 이데미쓰 고산 가부시키가이샤 냉동기용 윤활유 조성물 및 이 조성물을 사용하는 윤활방법
JPH10159734A (ja) * 1996-11-28 1998-06-16 Sanyo Electric Co Ltd 冷凍装置
JP4885339B2 (ja) * 1998-05-13 2012-02-29 出光興産株式会社 冷凍機油組成物
US6878677B1 (en) * 1999-03-05 2005-04-12 Idemitsu Kosan Co., Ltd. Refrigerating machine oil compositions
JP3501058B2 (ja) 1999-12-28 2004-02-23 ダイキン工業株式会社 空気調和機
JP2001248922A (ja) * 1999-12-28 2001-09-14 Daikin Ind Ltd 冷凍装置
WO2001058968A1 (fr) 2000-02-09 2001-08-16 Idemitsu Petrochemical Co., Ltd. Copolymeres a base d'ethylene, leur procede de production et huiles lubrifiantes les contenant
KR100857487B1 (ko) * 2000-06-28 2008-09-09 브룩스 오토메이션 인코퍼레이티드 극저온 교축 사이클 냉동 시스템에 사용하기 위한 불연성 혼합 냉매
CN100483040C (zh) 2000-06-28 2009-04-29 布鲁克斯自动化公司 用于深度低温的制冷系统的混合制冷剂
FR2813610B1 (fr) * 2000-09-04 2002-10-18 Atofina Composition utilisable comme fluide frigorifique
DE10209987A1 (de) * 2002-03-07 2003-09-25 Clariant Gmbh Thermisch stabile Polyalkylenglykole als Schmiermittel für Kältemaschinen
WO2005026286A1 (en) * 2003-09-08 2005-03-24 Stefko Properties Llc Replacement refrigerant for refrigerant r22-based refrigeration systems
JP4667761B2 (ja) * 2004-04-02 2011-04-13 出光興産株式会社 冷凍機油組成物
US20110167841A1 (en) 2004-06-04 2011-07-14 Brasscorp Limited Compositions and methods for injection of sealants and/or drying agents into air conditioning and refrigeration systems
US7296423B2 (en) * 2004-06-04 2007-11-20 Brasscorp Limited Composition and methods for injection of sealants into air conditioning and refrigeration systems
WO2006071965A2 (en) * 2004-12-28 2006-07-06 Stefko Properties, Llc Refrigerant for low temperature applications
US8070978B2 (en) * 2005-08-31 2011-12-06 Idemitsu Kosan Co., Ltd. Refrigerator oil composition
EP1921127A4 (en) * 2005-08-31 2013-01-09 Idemitsu Kosan Co REFRIGERATION OIL COMPOSITION
JP5122740B2 (ja) * 2005-11-15 2013-01-16 出光興産株式会社 冷凍機油組成物
CN101305083B (zh) 2005-11-15 2012-12-19 出光兴产株式会社 冷冻机油
JP4885533B2 (ja) 2005-12-20 2012-02-29 出光興産株式会社 冷凍機油組成物、これを用いた冷凍機用圧縮機及び冷凍装置
JP4885534B2 (ja) 2005-12-20 2012-02-29 出光興産株式会社 冷凍機油組成物、これを用いた冷凍機用圧縮機及び冷凍装置
CN105838327A (zh) * 2006-03-07 2016-08-10 斯蒂弗科财产有限责任公司 用于r-22基制冷系统的制冷剂替代品
WO2007102815A1 (en) * 2006-03-07 2007-09-13 Stefko Properties, Llc Replacement refrigerant for r22-based refrigeration systems
EP1995299B1 (en) * 2006-03-10 2018-01-31 Idemitsu Kosan Co., Ltd. Method of lubricating a refrigerating machine oil
CN101517052B (zh) 2006-09-29 2015-02-25 出光兴产株式会社 压缩型冷冻机用润滑油以及使用该润滑油的冷冻装置
JP5379486B2 (ja) * 2006-09-29 2013-12-25 出光興産株式会社 圧縮型冷凍機用潤滑油、及びそれを用いた冷凍装置
EP2075318B1 (en) * 2006-09-29 2013-06-26 Idemitsu Kosan Co., Ltd. Lubricant for compression refrigerating machine
WO2008041508A1 (fr) * 2006-09-29 2008-04-10 Idemitsu Kosan Co., Ltd. Lubrifiant destiné à une machine réfrigérante à compression et appareil réfrigérant utilisant ledit lubrifiant
KR101425238B1 (ko) * 2006-09-29 2014-08-01 이데미쓰 고산 가부시키가이샤 압축형 냉동기용 윤활유 및 이것을 사용한 냉동 장치
CN101522870B (zh) * 2006-09-29 2014-02-12 出光兴产株式会社 压缩型冷冻机用润滑油以及使用其的冷冻装置
JP5139665B2 (ja) * 2006-11-02 2013-02-06 出光興産株式会社 冷凍機用潤滑油組成物
JP5352053B2 (ja) * 2007-01-23 2013-11-27 出光興産株式会社 油冷式スクリュー空気圧縮機用潤滑油組成物およびこれを充填した油冷式スクリュー空気圧縮機
JP5060335B2 (ja) * 2008-02-15 2012-10-31 出光興産株式会社 冷凍機油組成物
JP2011021870A (ja) * 2009-06-17 2011-02-03 Sanden Corp 冷凍回路及びその改良法
WO2011127132A1 (en) * 2010-04-06 2011-10-13 Chemtura Corporation Refrigeration oil and compositions with carbon dioxide refrigerant
CN103060056B (zh) * 2011-10-20 2015-11-25 中国石油化工股份有限公司 磷酸酯液压油组合物
EP2902467A4 (en) * 2012-09-28 2016-05-25 Idemitsu Kosan Co LUBRICANTS FOR COMPRESSION COOLING MACHINES
WO2016056392A1 (ja) * 2014-10-09 2016-04-14 Ｊｘ日鉱日石エネルギー株式会社 冷凍機油及び冷凍機用作動流体組成物
US10214704B2 (en) * 2017-04-06 2019-02-26 Baker Hughes, A Ge Company, Llc Anti-degradation and self-healing lubricating oil
CN107216926A (zh) * 2017-07-06 2017-09-29 沈阳市宏城精细化工厂 与r32制冷剂低温互溶的聚乙烯基醚类润滑油基础油的制备方法及其在制冷系统中的应用

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3528647C1 (de) * 1985-08-09 1986-08-28 August 8710 Kitzingen Lenz Aufhackvorrichtung in Laeuterbottichen zur Wuerzegewinnung bei der Biererzeugung
JPH07119430B2 (ja) * 1989-05-08 1995-12-20 出光興産株式会社 圧縮型冷凍機用潤滑油
US4944890A (en) * 1989-05-23 1990-07-31 E. I. Du Pont De Nemours And Company Compositions and process of using in refrigeration
US5431835A (en) * 1992-02-18 1995-07-11 Idemitsu Kosan Co., Ltd. Lubricant refrigerant comprising composition containing fluorohydrocarbon
US5518643A (en) * 1992-06-04 1996-05-21 Idemitsu Kosan Co., Ltd. Lubricating oil containing a polyvinyl ether compound for compression-type refrigerators
AU669525B2 (en) * 1992-06-04 1996-06-13 Idemitsu Kosan Co. Ltd Polyvinyl ether compound and lubricating oil
JP3139517B2 (ja) * 1993-02-19 2001-03-05 出光興産株式会社 冷凍機油組成物
EP0612835B1 (en) * 1993-02-19 1999-08-25 Idemitsu Kosan Company Limited Refrigerating machine oil composition
US5499093A (en) * 1993-06-18 1996-03-12 Xeikon Nv Electrostatographic single-pass multiple station printer with register control
MY111325A (en) * 1993-12-03 1999-10-30 Idemitsu Kosan Co A lubricating oil for compression-type refrigerators.
JP3583175B2 (ja) * 1993-12-03 2004-10-27 出光興産株式会社 圧縮型冷凍機用潤滑油

Also Published As

Publication number Publication date
CN1210556A (zh) 1999-03-10
EP0882779A1 (en) 1998-12-09
DE69729279D1 (de) 2004-07-01
KR100470623B1 (ko) 2005-05-16
AU721587B2 (en) 2000-07-06
KR19990082283A (ko) 1999-11-25
DE69729279T2 (de) 2005-08-25
JPH09272886A (ja) 1997-10-21
EP0882779A4 (en) 1999-09-22
JP4112645B2 (ja) 2008-07-02
RU2199576C2 (ru) 2003-02-27
US6261474B1 (en) 2001-07-17
EP0882779B1 (en) 2004-05-26
WO1997028236A1 (fr) 1997-08-07
AU1558797A (en) 1997-08-22
MY128055A (en) 2007-01-31
TW419520B (en) 2001-01-21
CN1075108C (zh) 2001-11-21

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