真空闸

例句：

1. 1.The vacuum gate is used to preventair from entering the machine during operation.
   真空闸用于在机器运行过程中防止空气进入。
2. 2. The engineers had to replace thevacuum gate due to its failure.
   工程师们不得不更换真空闸，因为它已经失效了。
3. 3. The vacuum gate was designed to minimizethe risk of contamination during themanufacturing process.
   真空闸的设计旨在最小化生产过程中污染的风险。