axis of revolution

基本解释

If a region in the plane is revolved about a line, the resulting solid is called a solid of revolution, and the line is called the axis of revolution .
旋转体就是由一个平面图形绕这平面内的一条直线旋转一周而成的立体，这直线叫做旋转轴。
The author supposed that it is feasible to increase the diameter of the wheel, the revolution of principle axis in the primary fans in order to increase the flux of wind.
提出了增大皮带轮直轮，增加主扇主轴转数达到增加风量的可行性论证。
In particular, Procedure 3 can draw a rotation surface animation of a curve around an axis, and it can draw surface of revolution animation of combined curves around an axis too.
特别地，程序3可以单独绘制一条曲线的饶轴旋转的旋转曲面动画，亦可绘制组合曲线旋转曲面动画。