planet-gearing meaning in English

行星式齿轮传动

A kind of long - strike oil pumping machine using planet - gear
一种行星齿轮长冲程抽油机的换向机构研究
1 . each kind of averaged load unit of planetary - gear transmission is described in this paper . equivalent error of the averaged load component of four - planet - gear transmission is analyzed for first time as well as the affection of the manufacturing error of elementary component to the displacement of the averaged load component
本文的主要研究工作有： 1 .对各种类型的均载机构进行了比较；首次分析了4行星轮机构的均载构件等效误差,分析了安装和制造误差及其对均载构件均载位移量的影响。