sector gear bearing

例句：

1. 1. The newdesign of the car's engine hasa sector gear bearing that makes it moreefficient.
   汽车发动机的新设计采用了扇形齿轮轴承，使其更加高效。
2. 2. The engineer useda sector gear bearing to reduce friction inthe machine.
   工程师使用扇形齿轮轴承来减少机器中的摩擦。
3. 3. The sectorgear bearing is crucial formaintaining the smooth operation of thetransmission.
   扇形齿轮轴承对于保持传动装置的平稳运行至关重要。