bobed bearing

例句：

1. 1. The engineer designed a new type ofbobed bearing for the machine.
   工程师为机器设计了一种新型的滚动轴承。
2. 2.The ball bearings in the machine areall replaced with new ones.
   机器中的球轴承都换成了新的。
3. 3. Bobed bearings are usedin many industrial applications to reducefriction and improve efficiency.
   滚珠轴承被广泛用于工业应用中，以减少摩擦并提高效率。