圆的半径 meaning in English

radius of a circle

The radii of the rings are determined by the spacing of the gravity observation points .
圆的半径为重大观测点之间的距离所决定。
The maximum shearing stress to which the material is subjected has a value equal to the radius of the circle .
材料承受的最大剪断应力数值等于圆的半径。
What is the radius of this circle
这个圆的半径有多长？
The radius of a circle is 4cm , how many square centimeters is its area
一个圆的半径是4厘米，它的面积是多少平方厘米？
The radius of a circle described by a crank , cam , or similar machine part
（曲轴的）半径曲柄、凸轮或类似机器部件形成的圆的半径

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