单词：outer of roundness
outer of roundness的用法和样例：
例句
- One of the important indexs is ovality.其中椭圆度就是一个十分重要的指标。
- 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。
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