冲压件形状和位置未注公差
Unnoted tolerance of shape and position for stamping parts
检测标准
冲压件角度公差
Tolerance of angles for stamping parts
冲压 件尺寸公差
Tolerance of dimensions for stamping parts
水环真空泵和水环压缩机 气量测定方法
Water ring vacuum pumps and comprssors-Method for measurement of volume flow of gas
水环真空泵和水环压缩机试验方法
Water ring vacuum pumps and compressors-Testing method
微型往复活塞空气压缩机
Reciprocating minitype air compressors
铸造高 锰钢金相
Metallographs for high manganese cast steel
小型贯流式通风机
Miniature cross-flow fan
铁制旋启式止回阀
Cast iron swing check valves
液压传动滤芯 第4部分:额定轴向载荷检验方法
Hydraulic fluid power-Filter elements-Part 4:Method for rated end load test
