双周期性 Save Sign in to save words Traditional (Taiwan): 雙週期性 shuāngzhōuqīxìng ㄕㄨㄤ ㄓㄡ ㄑㄧ ㄒㄧㄥˋ double periodicity math. Character by character 双(shuāng)surname Shuang 周(zhōu)surname Zhou 期(qī)period 性(xìng)nature A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0