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振动冲击计量
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振动冲击计量
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工学
振动冲击计量
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vibration and shock metrology
振动冲击计量
关于振动冲击测量及其应用的学科。保证加速度、速度、位移等振动冲击单位统一、量值准确可靠的活动。力学计量的分支。通过建立基标准振动冲击装置,对振动冲击物体周期或频率、幅值和加速度进行测量。
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urban freight transport system
urban function
urban functional
urban function and type of urban function in China
urban function developed in parallel
urban furniture
urban gas source
urban gas supply firm
urban gas supply system
urban gas transmission and distribution system
urban geoenvironment assessment
urban geoenvironment monitoring
urban geographical information system
urban geographical theories of Chinaurban geographical theories of China
urban geological hazard chain
urban geological information platform
urban geological problems
urban geological resources
urban geological survey
urban geomorphology
urban governance
urban greening
urban green line
urban greenspace
urban green space index
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