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我們正在測量圓的半徑.We are measuring the radius of the circle.渾圓度取決于邊角的銳度或曲率半徑.Roundness depends on the sharpness or radius of curvature of the edges.火星的直徑比地球的半徑稍大些.The diameter of Mars is slightly over half that of the earth....

“半徑”的英語可以翻譯為：[數(shù)] radius，[天] semidiameter，radii ...

“半徑”的拼音為：bàn jìng...