Jyut Dictionary
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弧
度
[--]
Jyutping
wu4 dou6
Pinyin
hú dù
Definitions (CC-CEDICT)
radian
arc
curve
curvature
Definitions (粵典–words.hk)
量詞
平面角嘅單位。當一個圓心角所對嘅弧長等於半徑嗰陣,呢個角嘅大細就定義為1弧度。符號係 rad
(math.) radian
Definitions (Wiktionary)
noun
radian