a unit that has the same value as the force produced by 1,000,000 tons of TNT (= an explosive), used for measuring the power of explosions, especially nuclear explosions百万吨级(相当于100万吨梯恩梯炸药的爆炸威力,用于计量爆炸威力、尤其是核武器的爆炸威力)
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