exhaust steam valve

例句：

1. 1. The exhaust steam valve is essential for maintaining the engine's efficiency.
   排气蒸汽阀对于保持发动机效率至关重要。
2. 2. The exhaust steam valve was designed to prevent backdrafting in the exhaust system.
   排气蒸汽阀被设计用来防止排气系统中的回火现象。
3. 3. The engineer carefully inspected the exhaust steam valve before installing it.
   工程师在安装前仔细检查了排气蒸汽阀。