词语前级泵
解释backing pump
backing pump〔名词〕前级泵详细»
backing pump〔名词〕初步抽气泵,前级泵详细»
backing pump前级泵详细»
backing pump〔名词〕旋转油泵详细»
前级泵backing pump;forepump;prepump详细»
前级泵backing pump;prepump详细»
前级泵prepump详细»
前级泵backing pump详细»
前级泵forepump;prepump详细»
前级泵forepump详细»
前级泵fore pump详细»
前级泵prepump;rough pump详细»