单词：annular gear
annular gear的用法和样例：
例句
- Worn teeth on ring gear or drive pinion gear.环形齿轮或驱动小齿轮上齿磨损。
- As long as the truck is moving in a straight line, the ring gear, differential gears, and drive axles turn together without variation of speed.当卡车直线行驶的时候，环形齿轮，差速器齿轮和驱动轴便会无变速的一起转动。
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