标题: 【求助】林教授〈零件高级篇〉下 [打印本页] 作者: happy_ny 时间: 2002-9-16 17:01 标题: 【求助】林教授〈零件高级篇〉下 其中简单圆角范例六（p34)中，有一处椭圆标注中的“4个rho值都是sqrt(2)-1”是什么意思？rho和sqrt(2)-1分别代表什么？请高手指点一二。作者: qizhg 时间: 2002-9-16 17:26
The rho dimension of a conic segment PQ defines the shape of the conic. The rho dimension specifies a ratio along a vector from the chord (PQ) through a point C to the vertex (R). Point C is at the maximum distance (CD), measured by a normal from the chord PQ to the conic segment PQ.
