QB 654-1975 酒瓶螺纹瓶口

上一篇: QB/T 1672-1992 切纸刀
下一篇: QB 597-1983 ZMX1-4型刀盘削片机

Product Code:SAE J2805
Title:Measurement of Noise Emitted by Accelerating Road Vehicles
Issuing Committee:Light Vehicle Exterior Sound Level Standards Committee
Scope:This SAE Standard is equivalent to ISO 362-1:2007 and specifies an engineering method for measuring the noise emitted by road vehicles under typical urban traffic conditions. The specifications are intended to reproduce the level of noise which is generated by the principal noise sources during normal driving in urban traffic. The method is designed to meet the requirements of simplicity as far as they are consistent with reproducibility of results under the operating conditions of the vehicle.The test method requires an acoustical environment which is only obtained in an extensive open space. Such conditions are usually provided for during:measurements of vehicles for regulatory certificationmeasurements at the manufacturing stagemeasurements at official testing stationsThe results obtained by this method give an objective measure of the noise emitted under the specified conditions of test. It is necessary to consider the fact that the subjective appraisal of the noise annoyance of different classes of motor vehicles is not simply related to the indications of a sound measurement system. As annoyance is strongly related to personal human perception, physiological human condition, culture, environmental condition there is a large variation and therefore not useful as a parameter to describe a specific vehicle condition.Spot checks of vehicles chosen at random are rarely made in an ideal acoustical environment. If measurements are carried out on the road in an acoustical environment which does not fulfill the requirements stated in this document, the results obtained may deviate appreciably from the results obtained using the specified conditions.【英文标准名称】:SpecificationforStyrene-Butadiene(SBR)SyntheticRubberJacketforWireandCable(10.01)
【原文标准名称】:电线及电缆用丁苯合成橡胶套规范
【标准号】:ANSI/ASTMD866-1999
【标准状态】:现行
【国别】:美国
【发布日期】:1999
【实施或试行日期】:2004
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:绝缘;金属线;合成橡胶;电缆
【英文主题词】:Cablesheaths;Cables;Electricalengineering;Electricalinsulation;Insulations;SBR;Syntheticrubber;Wires
【摘要】:Thisspecificationcoversacrosslinkedstyrene-butadiene(SBR)syntheticrubbercompoundsuitableforuseastheoutercoveringorjacketoninsulatedelectricalwiresorcablesforheavy-dutyservice.Thisjacketisnotrecommendedforinstallationatatemperaturelowerthan35?C.Whenevertwosetsofvaluesarepresented,indifferentunits,thevaluesinthefirstsetarethestandard,whilethoseinparenthesesareforinformationonly.
【中国标准分类号】:K13;K15;G33
【国际标准分类号】:29_035_20
【页数】:
【正文语种】:英语