epicycloidal gear

例句：

1. 1. The engineer designed a new epicycloidal gear to improve the efficiency of the machine.
   工程师设计了一种新型的环面齿轮来提高机器的效率。
2. 2.The epicycloidal gear is used in many industrial applications, such as in the manufacturing industry.
   环面齿轮在许多工业应用中都有使用，比如在制造业。
3. 3.The epicycloidal gear was installed on the machine and it worked perfectly.
   将环面齿轮安装在机器上，它工作得非常好。