单词	Mach cone
释义	Mach cone noun : the conical pressure wave front produced by a body moving at a speed greater than that of sound Word History Etymology after Ernst Mach
随便看	maar maarad maarianhamina maarib maaribim maariv maarivim maars maas Maasai maasais maasbanker Maastricht Maathai Mab Maba mabe pearl mabes mabi mable mabolo mabuya mabyer mac mac 'n' cheese

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