空间直角坐标系的三个轴互相垂直。

The three axes of the coordinate system of right Angle of the space are vertical.

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分析和计算的空间问题，一般可采用两类坐标系：笛卡儿直角坐标系和极坐标系。

There are two kinds of coordinates, Cartesian coordinates and polar coordinates, with which spatial issues are analyzed and calculated.

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分析和计算的空间问题，一般可采用两类坐标系：笛卡儿直角坐标系和极坐标系。

There are two kinds of coordinates, Cartesian coordinates and polar coordinates, with which spatial issues are analyzed and calculated.

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