单词 | Mach angle |
释义 | Definition of Mach angle in English:Mach angle(also Mach's angle) noun
Origin1930s; earliest use found in John Dougall (b. 1867). Definition of Mach angle in US English:Mach angle(also Mach's angle) noun
Origin1930s; earliest use found in John Dougall (b. 1867). |
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