1·Let's not forget that eclipses in planetary motions had important symbolic meanings.
我们不要忘记，在行星运动中，日食有重要的象征意义。
2·The Moon's spin and tilt are unique among other planetary bodies in the solar system.
月球的自转和倾斜在太阳系的其他行星体中是独一无二的。
3·China's first planetary probe, the tiny Yinghuo-1 orbiter, will also hitch a ride to Mars with Phobos-Grunt.
中国的第一个行星探测器，小小的“萤火一号”轨道飞行器，也将搭乘“福布斯-格朗特”号飞船前往火星。
4·According to Alan Stern, planetary scientist, the biggest public relations boost for the ISS may come from the privately funded space flight industry.
行星科学家艾伦·斯特恩认为，国际空间站最大的公关推动力可能来自私人资助的太空飞行业。
5·They never altered their incorrect mental models of planetary motion because their everyday observations didn't support what their teachers told them.
他们从来没有改变他们关于行星运动的错误的心智模型，因为他们每天的观察所得并不证实他们的老师所教授的内容。
1·A variation from this type is planetary internal grinding, which is recommended for heavy workpieces that cannot be held in chucks.
这种方法的一个变体是行星式内表面磨削，当工件较重不能用卡盘固定时推荐使用。
2·The theory and solution of the lever analogy are systematically given, and the method is generalized to become a common one of dynamic analysis for planetary transmission.
系统地给出了杠杆模拟法的理论和应用方法，并将该方法推广成为行星式变速器动力学分析的通用方法。
3·The lever analogy used in analyzing planetary transmission has been perfected and further developed in this paper.
本文对用于行星式变速器分析的杠杆模拟法进行完善和拓展。
4·In order to obtain the kinetic model of wet grinding powdered whiting in the planetary ball mill, the process of wet superfine grinding of powdered whiting was studied by the BS model.
为了获得行星式球磨机中重钙的湿法超细粉碎动力学模型，用BS模型研究了重钙的湿法超细粉碎过程。
5·The planetary mill can be used for the ultrafine comminution, when the mechanism size of the mill is determined, the escaping position of the critical speed of the grinding ball will not be changed.
行星式球磨机可以用于超细磨矿。磨机的结构尺寸一旦确定，磨球脱离筒壁的临界转速脱离点位置则不会改变。