closed planetary gear train

基本解释

The closed planetary gear train, owing to its compactness in structure and seperation in power flow, has been widely applied in many machines, especially in flyer.
封闭式行星轮系，由于具有结构紧凑、功率分流等特点，在各种机械，特别是飞行器中，得到了广泛的应用。
About the problem how to calculate efficiency of differential gear train, in this paper, there is a new idea of"extending a differential gear train to an equivalent closed planetary gear train".
本文就如何计算差动轮系效率的问题，提出将差动轮系扩展成为等效封闭式行星轮系再进行计算的思想。