释义 |
Mach noun[ U ] uk /mɑːk//mæk/ us /mɑːk//mæk/ a measurement of speed that is calculated by dividing the speed of an object, especially an aircraft, by the speed of sound马赫(飞行速度与音速之比值) SMART Vocabulary: related words and phrases Measurements of speed accelerometer cadence G, g knot kph mph |