馬赫數 Save Sign in to save words Simplified: 马赫数 mǎhèshù ㄇㄚˇ ㄏㄜˋ ㄕㄨˋ Mach number physics Character by character 馬(mǎ)surname Ma 赫(hè)surname He 數(shù)number A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0