mǎhè
马赫
yīdīng
伊丁
yóunèisī
尤内斯
รายการคำศัพท์
马赫
  • ㄏㄜˋ
  • Mach (name); Ernst Mach (1838-1916), German physicist; Mach (aeronautics), unit of speed based on speed of sound = 1 Mach = 1224 km per hr[cedict]