vacuum pump oil

例句：

1. 1. The vacuum pump oil isused to maintain the cleanliness of thevacuum system.
   真空泵油用于保持真空系统的清洁。
2. 2. The vacuum pump oil needs to bereplaced regularly to ensure its performance.
   真空泵油需要定期更换，以保证其性能。
3. 3. Thevacuum pump oil is a crucial component inthe vacuum pump system, which helps toremove impurities from the air.
   真空泵油是真空泵系统的关键组成部分，它帮助从空气中去除杂质。