词语背压阀
解释back pressure valve
back pressure valve〔名词〕背压阀详细»
back pressure valve〔名词〕止回阀,防逆阀详细»
back pressure valve背压阀详细»
back pressure valve〔名词〕止回阀详细»
back pressure valve〔名词〕回压阀详细»
背压阀counterbalance valve详细»