| 释义 |
DEFINITIVE EXAMPLES 权威例句〔gear ratio〕The ratio of the speed of rotation of the powered gear of a gear train to that of the final or driven gear.齿轮速比：齿轮传动系的原动件的转动速度与最末件或从动件的速度之比美国传统〔planetary〕Being or relating to a gear train consisting of a central gear with an internal ring gear and one or more pinions.行星齿轮的：作为或关于包含一个中心齿轮，一个内环形齿轮和一个或多个小齿轮的齿轮系列的美国传统 |