外切圆 excircle
- 圆外切四边形相邻的三条边分别为2,4,6则第四条边的长为多少?
Three edges that the round circumscribed quadrilateral borders are 2 respectively , 4 , 6 item of fourth edges strong point is a number? - 计算机图形学中,传统的方法是用圆的内接和外切正多边形来逼近圆;
As the error for these approximate methods is bigger & oneway, the approximation for circle--intersecting polygon is introduced. - 介绍了一种方便实用、可在加工外圆、内孔时进行切深微量调节的方法。
A useful method for adjusting the micro-cutting depth when machining holes on a round bar is presented.
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