常見例句用作名詞 (n.)A plane figure bounded by two radii and the included arc of a circle.由兩個半徑和兩個半徑中間的弧所形成的一個平面形狀。It is now necessary to introduce a sign convention for radii of curvature.現(xiàn)在必須介紹曲率半徑的正負(fù)號規(guī)則。 返回 radii