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来自维基百科,自由的百科全书
弹芯是内爆式核武器的核心,由可裂变物质和与它相结合的中子反射体或者填塞物构成。 20世纪50年代的核武器弹芯多用纯铀-235,或者与钚复合[1],但是纯钚弹芯的直径最小,并且20世纪60年代初以来被视为标准。
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