reversing gear

• 换向[回动]齿轮[机构]

reversing gear的用法和样例：

例句

1. Check to know the electromagnet reaction of the reversing valve.
   检查各换向阀电磁铁动作是否灵活。
2. And the necessary condition of the overall dispersal reversing technology is introduced.
   同时介绍了采用分散换向技术的必要条件。