短語詞組短語valve lift guard 閥升程限制器valve e guard 閥片行程限制器valve to guard against block 防堵閥門delivery valve guard 吐出閥限位器outlet valve guard 呼氣閥門保護(hù)罩suction valve guard 吸入閥限位器;吸進(jìn)閥限位器valve guard group 氣門防護(hù)罩組件guard valve 安全閥;事故閥;防護(hù)閥;速動(dòng)閘門turbine guard valve 水輪機(jī)保護(hù)閥 返回 valve guard