mechanical purchase

海洋航海及海运英语翻译词汇 |... ... mechanical purchase 差动滑车 mechanical purchase 链滑车 mechanical purchase 链较辘 ...

海军军语词汇翻译（四） ... 机械定时引信 MTF 机械复滑车 mechanical purchase 机械货物 machinery goods ...

海洋航海及海运英语翻译词汇 |... ... mechanical pump 机械传动泵 mechanical purchase 差动滑车 mechanical purchase 链滑车 ...