planetary rotation rate 行星自转速率
planetary rotation engine 行星式旋转发动机
chair with planetary rotation 行星轨道旋转椅
Dynamics of Planetary Rotation 行星自转动力学
Convection ROtation and planetary Transits 对流旋转与行星凌星任务
This is how planetary rotation started.
这就是行星怎样开始旋转的。
At the same time, differential rotation driven through the planetary gear differential to achieve differential.
同时带动差速器旋转，并通过差速器的行星齿轮实现差速。
The shell not-rotation is the important technical requirement for planetary cross-mill.
轧件不转是行星斜轧机轧制的重要工艺要求。
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