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但这些组合经常是互相垂直的。
But these compositions are almost always orthogonal.
youdao
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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.
youdao
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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.
youdao