gridiron valve

例句：

1. 1. The gridiron valve is a critical component of the steam engine.
   蒸汽机的关键部件之一是格栅阀门。
2. 2.The engineers had to replace the gridiron valve due to wear and tear.
   由于磨损，工程师们不得不更换格栅阀门。
3. 3. The gridiron valve was designed to prevent air from entering the engine during operation.
   格栅阀门的设计目的是在运行过程中防止空气进入发动机。