短語(yǔ)詞組短語(yǔ)break away coupling valve 拉斷閥line break valve 差壓先導(dǎo)閥circuit break valve 分牐閥vacuum break valve 直空破壞閥;真空破壞閥hose break valve 軟琯斷開(kāi)閥V vacuum break valve 真空破壞閥air relief and vacuum -break valve 進(jìn)排氣閥break -off type reversing valve [油氣]斷銷式反循環(huán)閥 返回 break valve