画高次等参单元彩色云图的关键是计算单元覆盖像素的自然坐标。

The key of plotting colored patterns of high order isoparametric elements is to calculate the nature coordinates of pixels spanned by elements.

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本文介绍了一种适用于计算机分析的多刚体系统运动学分析的自然坐标法。

In this paper, a natural coordinate method suitable for the computer kinematic analysis of multibody system is introduced.

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在道德价值的坐标体系中，坐标的原点是“我”，我与他人，我与社会，我与自然，一切的关系都是由主体“我”而发射。

In ethical value's coordinate system, the coordinate zero point is "I", I with other people, I with the society, I with the nature, all relations am "I" launch by the main body.

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Those directions are more natural for me."

这套坐标系对我来说更显得自然"

耶鲁公开课 - 基础物理课程节选

For most of us, gravity acts this way, defines a vertical direction very naturally and the blackboard is oriented this way, so very natural to call that x and call that y and line up our axes.

对我们多数人来说,重力作用下,很自然地确定了竖直方向,而我们的黑板又是这个指向的,所以很自然地定出 x 轴和 y 轴,并标出我们的坐标系

耶鲁公开课 - 基础物理课程节选