emergency closing valve

例句：

1. 1.The emergency closing valve was used to prevent the leakage of oil.
   紧急关闭阀门被用来防止油的泄漏。
2. 2. The engineers quickly replaced the damaged emergency closing valve.
   工程师们迅速更换了损坏的紧急关闭阀门。
3. 3.The safety protocol requires that the emergency closing valve be tested regularly.
   安全协议要求定期测试紧急关闭阀门。