back valve〔名词〕单向阀详细»
back valve〔名词〕止回阀,单向阀,单向阀详细»
back valve〔名词〕止回阀,防逆阀详细»
逆止阀backbone pressure valve;backbone valve;backbonepressure valve;cut off valve;cutoff valve详细»
逆止阀back valve;backwater gate;cut off valve;inverted valve详细»
逆止阀back flow valve;back pressure valve;check valve;cut-off valve;non-return valve详细»