基本解释

• [机械工程]蝶式止回阀

英汉例句

双语例句

• Divided by the structure of a non-return valve can be divided into the H72 non-return valve on the jack-up folder, and Swing Check Valve Slow Close ZHYH46EJ micro butterfly check valve in three.
  止回阀按结构划分，可分为H72对夹升降式止回阀、旋启式止回阀和ZHYH46EJ微阻缓闭蝶形止回阀三种。

专业释义

机械工程

• 蝶式止回阀