我们正在测量圆的半径.We are measuring the radius of the circle.浑圆度取决于边角的锐度或曲率半径.Roundness depends on the sharpness or radius of curvature of the edges.火星的直径比地球的半径稍大些.The diameter of Mars is slightly over half that of the earth....

“半径”的英语可以翻译为：[数] radius，[天] semidiameter，radii ...

“半径”的拼音为：bàn jìng...