更有动力，还不需要变速箱传动。
They have more oomph, and no need of a gearbox to deliver it.
最后提出了行星齿轮变速箱传动方案的评价标准。
At the end of this article, an evaluation standard of planetary...
近几十年来，在行星变速箱传动简图方案的设计工作中，如何获得最佳方案，一直是设计者们追求的一个课题。
It has been being a problem how to obtain the optimal scheme for designers in the design of kinematic scheme of planetary gear box in recent many years.
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