butterfly swing check valve

常见例句

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。
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