等比級數 Save Sign in to save words Simplified: 等比级数 děngbǐjíshù ㄉㄥˇ ㄅㄧˇ ㄐㄧˊ ㄕㄨˋ geometric series (such as 1+2+4+8+...) Character by character 等(děng)wait for 比(bǐ)compare 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