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- Management of maintenance project for heating and power plant by system engineering method
用系统工程方法管理热电厂检修项目 - 2 hand-held non-electric power tools-noise measurement code-engineering method grade 2
手持非电动工具.噪声测量代码.工程法 - 2 hand-held non-electric power tools-noise measurement code-engineering method grade 2
手持非电动工具.噪声测量规程.工程方法 - Acoustics . measurement of noise emitted by two-wheeled mopeds in motion . engineering method
声学.机动脚踏两用车噪音的测定.工程法 - 2 acoustics-noise test code for compressors and vacuum pumps-engineering method grade 2
声学.压缩机和真空泵的噪声试验规范.工程法 - Measurement of noise emitted by rock drilling machines and pneumatic tools-engineering method
凿岩机械与气动工具噪声测量方法工程法 - 2 acoustics-noise test code for compressors and vacuum pumps engineering method grade 2
声学.压缩机和真空泵的噪声试验规范.工程方法 - Acoustics-measurement of noise emitted by accelerating road vehicles-engineering method
声学.加速道路车辆发出的噪音的测量.技术方法 - Acoustics-measurement of noise emitted by accelerating road vehicles-engineering method iso 362 : 1998
声学.车辆加速行驶噪声测量.工程法 - engineering method for the determination of sound power levels of noise sources using sound intensity
根据声音强度测定噪声源声功率级的工程方法
Last modified time:Mon, 11 Aug 2025 00:29:56 GMT