slide-valve lead

例句：

1. 1. The new design of the slide-valve lead is more efficient and reliable than the old one.
   新型滑动阀密封件的效率和可靠性比旧的更高。
2. 2. The engineers carefully inspected the slide-valve lead to ensure its smooth operation.
   工程师们仔细检查了滑动阀密封件，以确保其顺畅运行。
3. 3. The slide-valve lead was a critical component in the new engine's performance.
   滑动阀密封件是新引擎性能的关键部件。