短語(yǔ)詞組短語(yǔ)main feed check valve 主給水止回閥auxiliary feed check valve 輔助給水止回閥boiler feed check valve 鍋爐給水止回閥feed motorized valve 飼料電動(dòng)閥feed regulating valve 給水調(diào)整閥feed pump valve 添水泵閥main feed water valve 主給水閥Feed funnel valve 加料閥boiler feed shutoff valve 鍋爐給水關(guān)閉閥 返回 feed valve