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意思解释：（Radian）3°
【释义及用法】名量词。〈科〉计量平面角的一种单位。当圆心角所对的弧长和半径相等时，该角就是一弧度。【提示】“弧度”为我国法定计量单位，也是国际单位制辅助单位。…
[paraphrase and usage] renown measure word. < division > a kind of unit of metric and planar horn. When the arc length that is opposite when place of horn of the centre of a circle and radius are equal, this horn is one radian. [clew] radian for our country legal unit of measurement, also be secondary unit of international system of unit. ...
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