词汇	history of metrology
释义	history of metrology 计量史
随便看	singlearm pantogrpah singlearm plotter single-arm plotter single arm rig single-arm routing single-arm spectrometer single arm tiller single-arm tiller single-arm type rod single arrangement Single array detector single arrow link Single artery and vein of umbilical cord single artillery baseline revision single ascertainment single asperity single Assembly single assessment single asset depreciation accounting single assignment single assignment action single assignment approach single assignment language single assignment rule single association control function