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Mach

Mach /mæk $ mɑːk/ noun [uncountableU]
a unit for measuring speed, especially of an aircraft, in relation to the speed of sound. Mach 1 is the speed of sound, Mach 2 is twice the speed of sound etc 馬赫,馬赫數〔速度單位,尤用於計算飛行速度,一馬赫等於音速〕
a plane with a maximum speed of Mach 3
最大飛行速度爲3馬赫的飛機
Examples from the Corpus
Origin Mach
(1900-2000) Ernst Mach (1838-1916), Austrian scientist
Mach noun
Corpus

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