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ISO 389-6-2007 声学.听力测量设备校准用参考零点.第6部分:短时持续听觉试验信号参考扩音阀

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【英文标准名称】:Acoustics-Referencezeroforthecalibrationofaudiometricequipment-Part6:Referencethresholdofhearingfortestsignalsofshortduration
【原文标准名称】:声学.听力测量设备校准用参考零点.第6部分:短时持续听觉试验信号参考扩音阀
【标准号】:ISO389-6-2007
【标准状态】:现行
【国别】:国际
【发布日期】:2007-07
【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/TC43
【标准类型】:()
【标准水平】:()
【中文主题词】:声学;空气管;听力计;听力测定;听觉阈;校正;定义;电气工程;参考级;短期测量;信号;模拟;声压级;试验信号;扩音值;变压器
【英文主题词】:Acoustics;Airtubes;Audiometers;Audiometry;Auditorythreshold;Calibration;Definitions;Electricalengineering;Referencelevels;Short-termmeasurement;Signals;Simulation;Soundpressurelevel;Testsignals;Thresholdvalue;Transformers
【摘要】:ThispartofISO389specifiesreferencehearingthresholdlevelsfortestssignalsofshortdurationapplicabletothecalibrationofaudiometricequipmentwheresuchsignalsareused.
【中国标准分类号】:L31
【国际标准分类号】:13_140
【页数】:9P;A4
【正文语种】:英语


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Product Code:SAE J257
Title:Brake Rating Horsepower Requirements-Commercial Vehicles
Issuing Committee:Truck And Bus Brake Systems Committee
Scope:The performance values in this SAE Recommended Practice are applicable to vehicles with brake systems having typical service pressure ranges 0 to 14.1 MPa (0 to 2050 psi) hydraulic or 0 to 830 kPa (0 to 120 psi) air only. SAE J880 not only provides for determining maximum brake rating horsepower capability, also permits verification of any desired or arbitrary level such as the requirement established herein. The determining criteria for deciding brake rating horsepower capability are: a. cold brake stopping ability; b. fade as a result of horsepower absorption; c. hot brake stopping ability following horsepower absorption; d. brake system stability following horsepower absorption; and e. functional and structural integrity of brake system following test.
基本信息
标准名称:宝钢二高炉设备制造通用技术条件 铸件篇
中标分类:
ICS分类: 冶金 >> 冶金设备
发布日期:
实施日期:1987-07-01
首发日期:
作废日期:
出版日期:
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所属分类: 冶金 冶金设备