SAE AMS4157 Aluminum Alloy Extrusions, 7.7Zn - 2.4Mg - 1.6Cu - 0.16Cr (7049-T73511), Solution Heat Treated, Stress Relie

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Product Code:SAE AMS4157
Title:Aluminum Alloy Extrusions, 7.7Zn - 2.4Mg - 1.6Cu - 0.16Cr (7049-T73511), Solution Heat Treated, Stress Relieved, and Overaged
Issuing Committee:Ams D Nonferrous Alloys Committee
Scope:This specification covers an aluminum alloy in the form of extruded bars, rods, wire, shapes, and tubing.
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【英文标准名称】:Canvasbagforrescueline
【原文标准名称】:安全带包
【标准号】:DIN14921-1985
【标准状态】:作废
【国别】:德国
【发布日期】:1985-06
【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】:绳索;消防设备;物资清单;救护绳;材料;尺寸;袋;设计;作标记;安全索;消防队
【英文主题词】:marking;bags;dimensions;inventories;materials;firefightingequipment;firebrigade;design;rescuelines;safetylines;ropes
【摘要】:
【中国标准分类号】:C85
【国际标准分类号】:0610
【页数】:4P;A4
【正文语种】:德语


【英文标准名称】:Electroacoustics-Simulatorsofhumanheadandear-Part6:Mechanicalcouplerforthemeasurementofbonevibrators
【原文标准名称】:电声学.人头和人耳模拟器.骨振器的测量用机械耦合器
【标准号】:BSEN60318-6-2008
【标准状态】:现行
【国别】:英国
【发布日期】:2008-09-30
【实施或试行日期】:2008-09-30
【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】:声学;仿真乳突;听力测定;骨导体;骨振器;校准;耦合器;设计;电气工程;电声学;频率;频率范围;助听器;阻抗;使用说明书;作标记;测量;医疗技术学;规范
【英文主题词】:Acoustics;Artificialmastoids;Audiometry;Boneconductors;Bonevibrator;Calibration;Couplers;Design;Electricalengineering;Electroacoustics;Frequencies;Frequencyranges;Hearingaids;Impedance;Instructionsforuse;Marking;Measurement;Medicaltechnology;Specification
【摘要】:ThispartofIEC60318describesamechanicalcouplerforthemeasurementoftheoutputforceofbonevibrators.Themechanicalimpedanceofthecouplerisspecifiedinthefrequencyrange125Hzto8000Hz.Thecouplerisintendedforcalibrationofaudiometersusingbonevibratorshavingaplanecirculartipareaof175mm2±25mm2andfordeterminingtheperformanceofboneconductionhearingaids.Thevibratoryforcedevelopedbyabonevibratorisnot,ingeneral,thesameonthecouplerasonaperson’smastoid.However,theIECrecommendsitsuseasameansforthecalibrationofspecifiedvibratorsusedinaudiometryandfortheexchangeofspecificationsandofdataonboneconductionhearingaids.NOTESomebonevibratorsofhearingaidsandsomenon-standardisedbonevibratorsstillusedinaudiometryhaveacurvedsurface.UsersshouldbeawarethatthosevibratorsingeneralwillnotbeloadedonthemechanicalcouplerwiththesamemechanicalimpedanceastheonespecifiedinTable1ofthisstandard.
【中国标准分类号】:L31
【国际标准分类号】:17_140_50
【页数】:18P.;A4
【正文语种】:英语