SAE J2221 Standardized Symbols for Electrical Circuit Diagrams
作者:标准资料网 时间:2024-05-02 08:23:41 浏览:8073
来源:标准资料网
Product Code:SAE J2221
Title:Standardized Symbols for Electrical Circuit Diagrams
Issuing Committee:Truck And Bus Electrical Systems Committee
Scope: This SAE Recommended Practice identifies graphic symbols used in electrical circuit diagrams. The symbols aid troubleshooting electrical systems.
Rationale: This SAE Recommended Practice identifies graphic symbols used in electrical circuit diagrams. The symbols aid troubleshooting electrical systems.
【英文标准名称】:Waterquality-Toxicitytestforassessingtheinhibitionofnitrificationofactivatedsludgemicroorganisms
【原文标准名称】:水质.评定抑制活性污泥中微生物有机体氮化合作用的毒性试验
【标准号】:BSENISO9509-2006
【标准状态】:现行
【国别】:英国
【发布日期】:2006-07-31
【实施或试行日期】:2006-07-31
【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】:活性污泥;药液;定义;测定;含量测定;擒纵机构;污泥检验;抑制;微生物分析;微生物;氮化合物;硝化细菌;质量;污水;污泥;物质;试验;毒物;水;水质分析;水常规;水常规(实验);水质;水质试验
【英文主题词】:Activatedsludges;Chemicals;Definition;Definitions;Determination;Determinationofcontent;Escapementmechanisms;Examinationofsludge;Inhibition;Microbiologicalanalysis;Microorganisms;Nitrification;Nitrifyingbacteria;Quality;Sewage;Sludge;Substances;Testing;Toxic;Water;Wateranalysis;Waterpractice;Waterquality;Watertesting
【摘要】:ISO9509:2006specifiesamethodforassessingtheshort-terminhibitoryeffectofwaters,wastewatersortestsubstancesonnitrifyingbacteriainactivatedsludge.Theinhibitoryeffectisestimatedoveranexposureperiodofusually3horupto24hwithweaklynitrifyingsludge.Themethodisapplicabletonitrifyingactivatedsludgederivedfromdomesticandsyntheticsewageandalsotosludgesfromindustrialandmixeddomesticandindustrialwastewaters.Thenitrifyingactivityofthesludgeisverifiedbytestinginthepresenceandabsenceofaspecificinhibitor.Ifthenitrificationrateiswithinasuitablerangeforthetest,i.e.2mgofnitrogenpergramofsuspendedsolidandhourto6,5mgofnitrogenpergramofsuspendedsolidsandhour,thesludgemaybeuseddirectly.Ifnot,adjustmentsarenecessary.Themethodisapplicabletowater-soluble,non-volatilechemicals,andtowastewaters
【中国标准分类号】:Z16
【国际标准分类号】:13_060_70
【页数】:24P.;A4
【正文语种】:英语
【英文标准名称】:Methodsoftestingrefractorymaterials.Investmentcastingshellmouldsystems.Determinationofresistancetodeformationatelevatedtemperatures
【原文标准名称】:耐火材料试验方法.第10部分:薄壳铸造系统.在高温下耐变形的测定
【标准号】:BS1902Sec.10.1-1993
【标准状态】:作废
【国别】:英国
【发布日期】:1993-05-15
【实施或试行日期】:
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:试验设备;温度测量;公式;耐熔材料;铸造工艺;熔模铸造法;试验条件;铸模;加热试验;铸造设备;试样;挠曲试验;铸模设备
【英文主题词】:
【摘要】:
【中国标准分类号】:Q24;Q13
【国际标准分类号】:
【页数】:16P;A4
【正文语种】:英语
