单词：radius of curvature
radius of curvature的用法和样例：
例句
- For a given radius no one angle is correct for all speeds.对于给定的曲率半径，没有一个适合所有速度的角度。
- Roundness depends on the sharpness or radius of curvature of the edges.浑圆度取决于边角的锐度或曲率半径。
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