The field produced by the electric charge moving relatively to the rest system of reference is discussed from the viewpoint of Special relativity.

根据狭义相对论，讨论相对于静止参照系运动的源电荷在空间产生的电场。

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The ellipsoid model is the first part of a spatial reference system definition.

椭圆体模型是空间引用系统定义的第一部分。

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If you're an inertial observer, then in your system of reference, objects left at rest will remain at rest.

如果你是惯性观察者,那么在你的参考系内,静止的物体会保持静止

耶鲁公开课 - 基础物理课程节选

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