Mach
n[U]
(followed by a number 後接数词) ratio of the speed of sth (esp an aircraft) to the speed of sound 马赫
an aircraft flying at Mach two, ie twice the speed of sound 以两倍於音速飞行的飞机.
🏥 医学释义
马赫(音速单位)
🗣️ 情景例句
He keeps good company.
他和好人来往。
Life is a comedy to him who thinks and a tragedy to him who feels.
对善思考者,人生为喜剧;对凭感觉者,人生为悲剧。
and they provided a striking demonstration of the potentialities hidden in instruments and apparatus.