MIL-HDBK-141
时间:2024-05-02 19:15:35 来源: 标准资料网 作者：标准资料网 阅读：9670
MIL-HDBK-141, MILITARY STANDARDIZATION HANDBOOK: OPTICAL DESIGN (CHAPTERS 15 THROUGH 28) (5 OCT 1962) [CAUTION - 48 MB DOWNLOAD]., This document provides engineering personnel with an introduction to optical theory, and treats to an advanced level the fundamentals and principles of optical design. It is expected that wide distribution of the methods of design and computation presented in this document will result in more efficient and accurate methods of complying with military optical requirements.
【英文标准名称】:Low-voltagepowercapacitors
【原文标准名称】:低压电力电容器
【标准号】:JISC4901-2000
【标准状态】:现行
【国别】:日本
【发布日期】:2000-07-20
【实施或试行日期】:
【发布单位】:日本工业标准调查会(JP-JISC)
【起草单位】:TechnicalCommitteeonElectricityTechnology
【标准类型】:()
【标准水平】:()
【中文主题词】:电容器;交流电流;功率因数;电力电容器;户内电气设备;低电压;性能试验
【英文主题词】:lowvoltage;alternatingcurrent;;powerfactor;performancetesting
【摘要】:この規格は,力率改善の目的で。商用周波数の交流600V以下の回路に負荷と並列に接続して,屋内で使用する進相用の蒸着電極ゴンデンサ(以下,ゴンデンサという。)について規定する。
【中国标准分类号】:K48
【国际标准分类号】:31_060_70
【页数】:45P;A4
【正文语种】:日语
【英文标准名称】:StandardTestMethodforWaterLoss[fromaMortarSpecimen]ThroughLiquidMembrane-FormingCuringCompoundsforConcrete
【原文标准名称】:混凝土用液膜养护材料的失水率【砂浆试件】的标准试验方法
【标准号】:ASTMC156-2009a
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:C09.22
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:concretecuringmaterials;liquidmembrane-formingcuringcompounds;moistureretentionbyconcretecuringmaterials;Compound(curing);Curing(ofconcrete);Film;Liquidmembrane-formingcompounds;Sheetandfilm;Waterretention
【摘要】:Themoistureretainingabilityofaproductasdeterminedbythistestmethodisusedtoassessthesuitabilityofmaterialsforcontributingtoanappropriatecuringenvironmentforconcrete.Thelaboratorytestmethodisusedbothinformulatingandinspecifyingorqualifyingcuringproducts.Thistestmethodgivestheuserameasureoftheabilityoftestedcuringmaterialstoimpedetheescapeofmoisturefromahydrauliccementmortar.Sinceitisdesirabletoretainmoistureinfreshconcretetopromotethehydrationprocess,failureoftheproducttominimizetheescapeofmoisturemayleadtolossofstrength,cracking,shrinkage,orlowabrasionresistanceofthehardenedconcrete,oracombinationthereof.Manyfactorsaffectthelaboratorytestresults.Testresultsobtainedmaybehighlyvariableasindicatedbytheprecisionstatement.Criticalfactorsincludetheprecisionofthecontrolofthetemperature,humidityandaircirculationinthecuringcabinet,preparationandsealingofthemortarspecimens,theageandsurfaceconditionofthemortarspecimenwhenthecuringproductisapplied,andtheuniformityandquantityofapplicationofthecuringmembrane.1.1Thistestmethodcoverslaboratorydeterminationoftheefficiencyofliquidmembrane-formingcompoundsforcuringconcrete,asmeasuredbytheirabilitytoreducemoisturelossduringtheearlyhardeningperiod.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesaremathematicalconversionstoinch-poundunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.(Warning8212;Freshhydrauliccementitiousmixturesarecausticandmaycausechemicalburnstoskinandtissueuponprolongedexposure.)
【中国标准分类号】:Q13
【国际标准分类号】:91_100_30
【页数】:5P.;A4
【正文语种】:英语