diaphragm-operated valve

• 膜式阀

diaphragm-operated valve的用法和样例：

例句

1. The Pacific tilting disc check valve uses gravity to rapidly close the disc upon reversal of flow.
   美国太平洋翻转式阀瓣止回阀在出现逆流时利用重力迅速关闭阀瓣。