通用橋式起重機 限界尺寸 Boundary dimensions of E.O.T.cranes

機動工業(yè)車輛 控制符號 Powered industrial trucks--Control symbols

渦輪分子泵性能測試方法 Methods of measurement of the performance characteristics of tubo-molecular pumps

往復(fù)活塞壓縮機機械振動測量與評價 Measurement and evluation of mechanical vibration of reciprocating piston compressors

 制冷劑編號表示方法 Number designation of refrigerants