epicyclic gear meaning in English

内装变速器
行星齿轮；周转齿轮
游星齿轮
周转齿轮；行星齿轮
周转齿轮系

Application of determinant to efficiency calculation of epicyclic gear trains
行列式在周转轮系效率计算中的应用
Development of epicyclic gear for wheel - on sky pumping unit with stroke increased
行星齿轮增程式天轮抽油机的研制
Variable - ratio epicyclic gear
变速比行星齿轮
A description was carried out on the complicated epicyclic gear train by adopting the functional schematic diagram and the knowledge of graph theory
摘要采用功能示意图和图论知识对复杂周转轮系进行描述。