该方法通过二次曲面求管线表面轮廓方程进而求得管线的型值点集。
With this method, shape points were calculated by surface outline equation got from quadratic surface.
我们称这个曲面为应力二次曲面。
我们称这个曲面为应力二次曲面。
给出了二次曲面在转轴变换下的六个不变量的简易证明。
A simple proof of six invariants under the transformation of spin axis is put forward.
给出了二次曲面在转轴变换下的六个不变量的简易证明。
A simple proof of six invariants under the transformation of spin axis is put forward.
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