算術(shù)平均；等差中項(xiàng)；算術(shù)中項(xiàng)算術(shù)平均值arithmeticprogre ion: 等差級(jí)數(shù)；算術(shù)級(jí)數(shù)arithmetician: n. 算術(shù)家。 arithmeticprogre ion（sequence）: 等差數(shù)列arithmeticfaultmode: 運(yùn)算故障模型arithmetics: 算術(shù)下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯
