sealed-in unit

• 密封装置； 密封设备

sealed-in unit的用法和样例：

例句

1. The gear reducers are sealed units requiring periodic lubricant change.
   齿轮减速器是整体密封装置需要定期更换润滑剂。
2. To determine Ball bearing Rating Fatigue Life of Ferro fluid sealed spindles, please use this table and the basic equation below.
   磁性流体密封装置的轴承疲劳寿命按照以下的方法来计算。