base point coordinate system 基点坐标系 ; 基点座标系
For example, the bottom point of a label is (0, label.height) in a label's coordinate system.
例如，在标签的坐标系中标签的底部点为(0,label . height)。
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.
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。
According to the definitions of grads, divergence and rotation, the expression in spherical coordinate system is given from the point of physics.
据梯度、散度、旋度的定义，用物理的方法给出了在球坐标系中的表达式；此方法也可以推广到其它的正交曲面坐标系中。
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