Besides common geometric measurements such as distances and angles, a new measurement of average curvature energy defined for boundary curve segment is included in the set to describe curve feature.
除了常见的几何测量(如距离和角度)外，提出了一种平均曲率能量的测量方法来描述边界曲线特征。
The curve is more than just an aesthetic feature - the arch forces the water to press downwards against the dam.
它的曲线不仅具有美学特征，它的拱门更是将水流压向水坝的下方。
The disadvantages are that you have to pay for them, they have a steep learning curve, and they don't allow you access to their source code in case you need to modify a feature.
而缺点是您需要为它们付费，有一段陡峭的学习曲线，而且当您需要修改功能时不允许您访问源代码。
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