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
for giving me a passing grade.
给我及格分数。
It's the year of 1999.
今年是1999年。
The experts were now fully convinced that the animal was a puma,