| 单词 | Mach |
| 释义 | Mach From Longman Dictionary of Contemporary EnglishMachMach /mæk $ mɑːk/ noun [uncountable]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 etca plane with a maximum speed of Mach 3Examples from the CorpusMach• The plane can sustain a speed of Mach 3, or three times the speed of sound.Origin Mach (1900-2000) Ernst Mach (1838-1916), Austrian scientist |
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