That unit is called the radian, and its name comes from the fact that it’s based on the radius of a circle.
该单位称为弧度, 其名称来源于它基于圆的半径这一事实。
单词 | radius of a circle |
例句 |
原声例句
Crash Course 综合篇 That unit is called the radian, and its name comes from the fact that it’s based on the radius of a circle. 该单位称为弧度, 其名称来源于它基于圆的半径这一事实。 |
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