| 单词 | Mach number |
| 释义 | Mach number [`mäk ´nǝm·bǝr] FLUID MECHANICS The ratio of the speed of a body or of a point on a body with respect to the surrounding air or other fluid, or the ratio of the speed of a fluid, to the speed of sound in the medium. Symbolized NMa . Also known as relative Mach number. |
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