“半径”造句

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.

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