double image line

• 重影线

double image line的用法和样例：

例句

1. A new method was put forward to find the intersection line and determine its visibility of general position lines and planes using overlapped projection lines.
   摘要提出用重影线法判断两重影直线的相对位置和求解一般位置直线与平面相交求交点判别可见性的新方法。