桨盘面积比盘面比disc: disc2 = discothèque 〔此词不如 di ...ratio: n. (pl. ratios) 1.比,比率,比值;比例 ...disc area ratio: 圆盘面积比disc flow ratio: 桨盘入流系数disc-area ratio: 盘面比下载手机词典可随时随地查词查翻译