平方平均數 Save Sign in to save words Simplified: 平方平均数 píngfāngpíngjūnshù ㄆㄧㄥˊ ㄈㄤ ㄆㄧㄥˊ ㄐㄩㄣ ㄕㄨˋ root mean square (RMS) quadratic root Character by character 平(píng)surname Ping 方(fāng)surname Fang 平(píng)surname Ping 均(jūn)equal 數(shù)number A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0