寻求移动变换机构中旋转角度计算的方法，给出了移动变换定义，按定义推导出了代数方程组。
The calculation of revolving angles is direct and forthright by combination of form and number.
比方说，鼠标上下移动变换成沿一个轴向上的移动，而45度角的拖动常用于表示另一个轴上的运动。
Typically, up and down mouse movements translate into movement along one axis , whereas 45-degree-angle drags are used for each of the other two axes.
如果你把桌子的所有部分都加到单一的变换组，那么你就可以用一个变换移动整张桌子。
If you add all the parts of the table to a single transform group, you can move the whole table with one translation.
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