Planetary gearbox

• 行星齿轮

Planetary gearbox的用法和样例：

例句

1. Planetary gear systems are also used in many automatic transmissions.
   行星齿轮组也同样用于许多汽车变速器中。
2. The Nexus transmission uses planetary gearing similar to a car's automatic transmission.
   纳克索斯变速系统使用的行星齿轮，和汽车的自动排档类似。