IEC 60147-4-1976 半导体器件的基本额定值和特性以及测量方法的一般原则.第4部分:验收和可靠性
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【英文标准名称】:Essentialratingsandcharacteristicsofsemiconductordevicesandgeneralprinciplesofmeasuringmethods.Part4:Acceptanceandreliability
【原文标准名称】:半导体器件的基本额定值和特性以及测量方法的一般原则.第4部分:验收和可靠性
【标准号】:IEC60147-4-1976
【标准状态】:作废
【国别】:国际
【发布日期】:1976
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/TC47
【标准类型】:()
【标准水平】:()
【中文主题词】:电气工程;测量;半导体;验收;极限(数学);特性;半导体器件;电子工程;可靠度;电子设备及元件
【英文主题词】:semiconductordevices;properties;reliability;limits(mathematics);semiconductors;measurement;electricalengineering;electronicequipmentandcomponents;electronicengineering;acceptance(approval)
【摘要】:
【中国标准分类号】:L40
【国际标准分类号】:2370;1443
【页数】:39P;A4
【正文语种】:英语
Product Code:SAE ARP4698
Title:Guide for Choosing a Minimum Wall Thickness of Tubing for Use With Weld Fittings Coded for a Range of Wall Sizes
Issuing Committee:G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Scope: This SAE Aerospace Recommended Practice (ARP) is intended as a guide for choosing a minimum wall thickness of tubing, based only on pressure, for use with welded tube fitting ends that have a 'tube wall code' covering a range of tube wall thicknesses. These wall thicknesses are based on burst pressure with an arbitrary additional safety factor. If the weld fitting user has already established the required minimum wall thickness for given performance conditions, this guide does not apply.【英文标准名称】:Ophthalmicinstruments-Trialcaselenses
【原文标准名称】:眼科仪器测试箱镜头
【标准号】:ISO9801-1997
【标准状态】:作废
【国别】:国际
【发布日期】:1997-06
【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/TC172
【标准类型】:()
【标准水平】:()
【中文主题词】:规范(验收);试验;光学;定义;测试框架;透镜;眼镜镜片;显微镜
【英文主题词】:Definitions;Lenses;Marking;Microscopes;Ophthalmicoptics;Ophthalmictestequipment;Ophthalmology;Optics;Specification(approval);Spectaclelenses;Testing;Tolerances(measurement);Trialframes
【摘要】:ThisInternationalStandardspecifiesrequirementsformountedophthalmicfull-and/orreduced-aperturetrialcaselensesforthedeterminationoftherefractiveerroroftheeye.ThisInternationalStandardtakespriorityoverISO15004,ifdifferencesexist.
【中国标准分类号】:C32
【国际标准分类号】:11_040_70
【页数】:11P;A4
【正文语种】:英语