radian apparatus弧度: radian circular measure; rad ...表: outside; surface; external用弧度表示经度: longitude in arc弧度: 1.[数学] (量角单位) radian2.(弧度法) circular measure; radian measure◇弧度测量 arc measurement刀弧度: arch control下载手机词典可随时随地查词查翻译