短語(yǔ)詞組短語(yǔ)discharge valve deck 放泄閥蓋inlet valve deck 進(jìn)給閥蓋valve deck plate 閥板;牐板valve deck plate type piston 閥板式活塞泵deck valve 臺(tái)閥;甲板閥hermetic deck valve 封密甲板閥deck drain valve 甲板泄水閥 返回 valve deck