等差級數 Save Sign in to save words Simplified: 等差级数 děngchājíshù ㄉㄥˇ ㄔㄚ ㄐㄧˊ ㄕㄨˋ arithmetic series (such as 2+4+6+8+...) Character by character 等(děng)wait for 差(chā)difference 級(jí)level 數(shù)number A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0