radian
🇺🇸
/ˈreɪdiən/
🇬🇧
/ˈreɪdiən/
noun
R
A measure for angles. One radian is the angle made when you take the radius of a circle and wrap it along the edge of the circle.
The engineer explained that the machine's arm rotated 2 radians, which is a bit more than 90 degrees.
这位工程师解释说，机器的手臂旋转了2弧度，这比90度略多一些。
translation
弧度
词形变化
Plural
radians