Tudor arch是什么意思

用法例句

Error analysis of the approximate ellipse made by four-arcs method;

用四心圆法作近似椭圆的偏差分析

This four-center method of circular isometric project paralleled coordinate plane are analysised, and deuces a simple predigestion method to make drawing wide of isometric project ellipse.

通过对正等轴测图中平行于坐标面圆的四心法作图进行分析,提出了一种简便易行的椭圆简化画法,该方法不仅只适用于正等轴测图,而且适用于任何等轴测的情况。