GB/T 1845.1-1999 聚乙烯(PE)模塑和挤出材料 第1部分:命名系统和分类基础

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基本信息
标准名称:聚乙烯(PE)模塑和挤出材料 第1部分:命名系统和分类基础
英文名称:Polyethylene (PE) moulding and extrusion materials—Part 1:Designation system and basis for specifications
中标分类: 化工 >> 合成材料 >> 合成树脂、塑料基础标准与通用方法
ICS分类: 橡胶和塑料工业 >> 塑料 >> 热塑性塑料
替代情况:GB/T 1845-1988
发布部门:国家质量技术监督局
发布日期:1999-08-01
实施日期:2000-06-01
首发日期:1980-01-31
作废日期:1900-01-01
主管部门:中国石油和化学工业协会
归口单位:全国塑料标准化技术委员会
起草单位:北京燕山石化公司树脂应用所
出版社:中国标准出版社
出版日期:2004-04-01
页数:平装16开, 页数:9, 字数:12千字
书号:155066.1-16729
适用范围

本标准规定了聚乙烯热塑性塑料材料的命名系统,也可以作为分类基矗本标准适用于聚乙烯均聚物以及其他1-烯烃单体含量少于50%(m/m)和带官能团的非烯烃单体含量不多于3%(m/m)的共聚物。本标准适用于常规为粉状、颗粒和碎粒状,未改性或经着色剂、添加剂、填料等改性的材料。

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所属分类: 化工 合成材料 合成树脂 塑料基础标准与通用方法 橡胶和塑料工业 塑料 热塑性塑料
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Product Code:SAE AMS5077
Title:Steel Tubing, Welded, (0.22 - 0.28C) (SAE 1025), Normalized or Stress Relieved
Issuing Committee:Ams E Carbon And Low Alloy Steels Committee
Scope:This specification covers a low-carbon steel in the form of welded tubing. This tubing has been used typically for parts requiring a moderate-strength tubing suitable for forming and for welding and brazing, but usage is not limited to such applications.【英文标准名称】:Informationtechnology-Programminglanguages;Fortran-Part2:Varyinglengthcharacterstrings
【原文标准名称】:信息技术程序设计语言FROTRAN第2部分:变长字符串
【标准号】:ISO/IEC1539-2-2000
【标准状态】:现行
【国别】:国际
【发布日期】:2000-06
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/IECJTC1
【标准类型】:()
【标准水平】:()
【中文主题词】:人工语言;FORTRAN语言;字符串;计算机软件;程序设计语言;数据处理;信息技术
【英文主题词】:Artificiallanguages;Characterstrings;Computersoftware;Dataprocessing;FORTRAN;Informationtechnology;Programminglanguages
【摘要】:ThispartofISO/IEC1539definesfacilitiesinFortranforthemanipulationofcharacterstringsofdynamicallyvariablelength.ThispartofISO/IEC1539providesanauxiliarystandardfortheversionoftheFortranlanguagespecifiedbyISO/IEC1539-1:1997andinformallyknownasFortran95.Aprogramthatconformswith1539-2:1994alsoconformswiththisstandard.ThispartofISO/IEC1539isanauxiliarystandardtothatdefiningFortran95inthatitdefinesadditionalfacilitiestothosedefinedintrinsicallyintheprimarylanguagestandard.AprocessorconformingtotheFortran95standardisnotrequiredalsotoconformtothispartofISO/IEC1539.However,conformancetothispartofISO/IEC1539assumesconformancetotheprimaryFortran95standard.ThispartofISO/IEC1539prescribesthenameofaFortranmodule,thenameofaderiveddatatypetobeusedtorepresentvarying-lengthstrings,theinterfacesfortheproceduresandoperatorstobeprovidedtomanipulateobjectsofthistype,andthesemanticsthatarerequiredforeachoftheentitiesmadeaccessiblebythismodule.ThispartofISO/IEC1539doesnotprescribethedetailsofanyimplementation.NeitherthemethodusedtorepresentthedataentitiesofthedefinedtypenorthealgorithmsusedtoimplementtheproceduresoroperatorswhoseinterfacesaredefinedbythispartofISO/IEC1539areprescribed.Aconformantimplementationmayuseanyrepresentationandanyalgorithms,subjectonlytotherequirementthatthepubliclyaccessiblenamesandinterfacesconformtothispartofISO/IEC1539,andthatthesemanticsareasrequiredbythispartofISO/IEC1539andthoseofISO/IEC1539-1:1997.ItshouldbenotedthataprocessorisnotrequiredtoimplementthispartofISO/IEC1539inordertobeastandardconformingFortranprocessor,butifaprocessorimplementsfacilitiesformanipulatingvaryinglengthcharacterstrings,itisrecommendedthatthisbedoneinamannerthatisconformantwiththispartofISO/IEC1539.AprocessorconformingtothispartofISO/IEC1539mayextendthefacilitiesprovidedforthemanipulationofvaryinglengthcharacterstringsaslongassuchextensionsdonotconflictwiththispartofISO/IEC1539orwithISO/IEC1539-1:1997.Amodule,writteninstandardconformingFortran,isreferencedinAnnexA.ThismoduleillustratesonewayinwhichthefacilitiesdescribedinthispartofISO/IEC1539couldbeprovided.ThismoduleisbothconformantwiththerequirementsofthispartofISO/IEC1539and,becauseitiswritteninstandardconformingFortran,itprovidesaportableimplementationoftherequiredfacilities.Thismoduleisreferencedforinformationonlyandisnotintendedtoconstrainimplementationsinanyway.Thismoduleisademonstrationthatatleastoneimplementation,instandardconformingandhenceportableFortran,ispossible.ItshouldbenotedthatthispartofISO/IEC1539definesfacilitiesfordynamicallyvaryinglengthstringsofcharactersofdefaultkindonly.ThroughoutthispartofISO/IEC1539allreferencestointrinsictypeCHARACTERshouldbereadasmeaningcharactersofdefaultkind.Similarfacilitiescouldbedefinedfornon-defaultkindcharactersbyaseparate,ifsimilar,moduleforeachsuchcharacterkind.ThispartofISO/IEC1539hasbeendesigned,asfarasisreasonable,toprovideforvaryinglengthcharacterstringsthefacilitiesthatareavailableforintrinsicfixedlengthcharacterstrings.AlltheintrinsicoperationsandfunctionsthatapplytofixedlengthcharacterstringshaveextendedmeaningsdefinedbythispartofISO/IEC1539forvaryinglengthcharacterstrings.Alsoasmallnumberofadditionalfacilitiesaredefinedthatareappropriatebecauseoftheessentialdifferencesbetweentheintrinsictypeandthevaryinglengthderiveddatatype.
【中国标准分类号】:L74
【国际标准分类号】:35_060
【页数】:20P;A4
【正文语种】:英语