缩小比reduction: n. 1.缩小,减少;降级,降位;(刑罚等的)轻减;减速 ...ratio: n. (pl. ratios) 1.比,比率,比值;比例 ...r: r = 1.refrigerator. 2. ...r ratio: 比例,比率ratio of reduction: 减速比; 破碎比; 缩小率下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:reduction ratio r,即可在微信中查询翻译