MACH


Meaning of MACH in English

~ is used as a unit of measurement in stating the speed of a moving object in relation to the speed of sound. For example, if an aircraft is travelling at ~ 1, it is travelling at exactly the speed of sound. (TECHNICAL)

N-UNCOUNT: N n/num

Collins COBUILD.      Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) .