outer of roundness

• 椭圆度

outer of roundness的用法和样例：

例句

1. One of the important indexs is ovality.
   其中椭圆度就是一个十分重要的指标。
2. The ellipticity only influences casing damage caused by outer extruding force.
   椭圆度仅对均匀外挤压力导致套管破坏有较大影响。