算术级数增产率arithmetic: n. 1.算术,算法;计算。 2.算术书。 ...increase: vt. 增加,增大,增多;增强,增进 (opp. dec ...rate: vt.,vi. 〔方言〕=ret. arithmetic ratio of food increase: 食物增加按算术比例increase rate: 上涨率下载手机词典可随时随地查词查翻译