BS ISO 21807-2004 食品和动物饲料的微生物学.水活性的测定
时间:2024-05-11 23:12:45 来源: 标准资料网 作者：标准资料网 阅读：9096
【英文标准名称】:Microbiologyoffoodandanimalfeedingstuffs-Determinationofwateractivity
【原文标准名称】:食品和动物饲料的微生物学.水活性的测定
【标准号】:BSISO21807-2004
【标准状态】:现行
【国别】:英国
【发布日期】:2004-09-29
【实施或试行日期】:2004-09-30
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Agriculturalproducts;Analysis;Animalfeed;Definition;Definitions;Foodinspection;Foodproducts;Foodtesting;Metabolism;Microbiologicalanalysis;Microbiology;Shelflife;Testing;Verification;Wateractivity
【摘要】:ISO21807:2004givesbasicprinciplesandrequirementsforphysicalmethodsofdeterminingthewateractivityofproductsintendedforhumanconsumptionandthefeedingofanimals.Wateractivitycanbeusedtopredictmicrobialgrowthanddeterminethemicrobiologicalstabilityofafoodproduct,anditalsoprovidesanimportant,quantitativelydeterminablecriterionforestimatingthetimesforwhichafoodstuffcanbekept.
【中国标准分类号】:C53
【国际标准分类号】:07_100_30
【页数】:14P;A4
【正文语种】:英语
【英文标准名称】:Potentiometersforuseinelectronicequipment-Genericspecification
【原文标准名称】:电子设备用电位器.通用规范
【标准号】:BSEN60393-1-2009
【标准状态】:现行
【国别】:英国
【发布日期】:2009-09-30
【实施或试行日期】:2009-09-30
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:电容性负载;定义(术语);电气工程;电子工程;总规范;检验;螺杆驱动的;测量;测量技术;电位器;质量保证;电阻器;规范(验收);温度;测试;扭矩;微调电位器
【英文主题词】:Capacitiveloads;Definitions;Electricalengineering;Electronicengineering;Genericspecification;Inspection;Lead-screwactuated;Measurement;Measuringtechniques;Potentiometers(resistors);Qualityassurance;Resistors;Specification(approval);Temperature;Testing;Torque;Trimmingpotentiometers
【摘要】:ThispartofIEC60393isapplicabletoalltypesofresistivepotentiometers,includingleadscrewactuatedtypes,presets,multi-turnunits,etc.tobeusedinelectronicequipment.Itestablishesstandardterms,inspectionproceduresandmethodsoftestforuseinsectionalanddetailspecificationsofelectroniccomponentsforqualityassessmentoranyotherpurpose.Ithasbeenmainlywritten,andthetestmethodsdescribed,toconformtothewidelyusedsingle-turnrotarypotentiometerwithanoperatingshaft.Forothertypesofpotentiometers:?theangleofrotationmaybeseveralturns;?thereferencetoanoperatingshaftshallapplytoanyotheractuatingdevice;?theangularrotationshallbetakentomeanmechanicaltraveloftheactuatingdevice;?avalueforforceshallbeprescribedinsteadofavaluefortorqueiftheactuatingdevicemovesinalinearinsteadofarotarymanner.Thesealternativeprescriptionswillbefoundinthesectionalordetailspecification.Whenacomponentisconstructedasavariableresistor,i.e.asatwo-terminaldevice,thedetailspecificationshallprescribethemodificationsrequiredinthestandardtests.
【中国标准分类号】:L14
【国际标准分类号】:31_040_20
【页数】:110P.;A4
【正文语种】:英语
【英文标准名称】:Headlessclevinspinsforrailvehicles
【原文标准名称】:有轨车辆用无头螺柱
【标准号】:DIN5525-1987
【标准状态】:作废
【国别】:德国
【发布日期】:1987-02
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:锁定装置及定位装置;规范(审批);作标记;铁道车辆;设计;铁路车辆零部件;检验;砝码;尺寸;材料;U形夹销;紧固件;螺栓
【英文主题词】:railwayvehiclecomponents;bolts;clevispins;fasteners;marking;weights;materials;inspection;railwayvehicles;lockingandlocatingdevices;design;dimensions;specification(approval)
【摘要】:
【中国标准分类号】:J13;S34
【国际标准分类号】:4060
【页数】:5P;A4
【正文语种】:德语