radian measure的用法和樣例：
例句
- Radians are another way to measure angles.
弧度是另一種度量角度的方法。 - A radian is the angle subtended by an arc of a circle whose length is just equal to the radius.
一弧度就是長度剛好等於半徑的一段圓弧所對的圓心角。 - The success rate of the first attempt using retro-hent radian method was significantly higher thanthat using the routine method, with low frequency of re-implantation.
逆彎曲弧度法置入胃管一次成功率顯著高於常規法，且反覆置人率低。
