0 a unit for measuring speed in relation to the speed of sound, used especially for aircraft -- Mach
中文繁体
馬赫（飛行速度與音速之比值）…
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马赫（飞行速度与音速之比值）…
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Mach, número Mach…
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Mach…
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le nombre de Mach…
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Mach, Machovo číslo…
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machtal…
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mach, satuan kecepatan…
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