Mach
noun [ U ] uk/mɑːk/ /mæk/ us/mɑːk/ /mæk/
马赫（飞行速度与音速之比值）
a measurement of speed that is calculated by dividing the speed of an object, especially an aircraft, by the speed of sound
| 单词 | Mach |
| 释义 | Mach noun [ U ] uk/mɑːk/ /mæk/ us/mɑːk/ /mæk/ 马赫（飞行速度与音速之比值） a measurement of speed that is calculated by dividing the speed of an object, especially an aircraft, by the speed of sound |
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