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	pindarising pindarized pindarizes pindarizing pindars pinder pinders pindling pindo palm pindot pindotted Pindus Mountains pindy pine pine (away) pine (for) pine after pine aphid pine away pine bark pine bark aphid pine barren Pine Barrens pine beetle Pine Bluff

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