離心泵、混流泵、軸流泵和旋渦泵試驗方法 Test methods for centrifugal, mixed flow, axial and regenerative pumps

通風機基本型式、尺寸、參數(shù)及性能曲線 Basic types, sizes, parameters and characteristics of fans

單張紙平版膠印機 技術條件 Specification for sheet-fed planographic offset press

起重機設計規(guī)范 Design rules for cranes