短語詞組短語main feed check valve 主給水止廻閥auxiliary feed check valve 輔助給水止廻閥boiler feed check valve 鍋爐給水止廻閥feed motorized valve 飼料電動閥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