内切圆半径 meaning in English

i cribed circle radius
inscribed circle radius
inscribed radius

In data processing , several data file format exported from measuring system has been analysis in detail , and some research has been made in these file - formats , and some try was made also . the decision standard of a thin and long triangle was discussed . besides the minimum angle of a triangle , there also the no - equlangularity and the ratio of radius of inscribed circle and circumcircle of a triangle
比如利用vc6 . 0开发了程序，可以计算三角片的法矢量、三角片的一些特征信息，以及狭长三角形的判断，特别是分析了除最小角之外的两个判断标准：外接圆和内切圆半径之比值r r ，以及三角形的不等边度e ，及它们与最小角之间的一致关系。