送交者: conner 于 2006-10-10, 17:57:12:

回答: NK has uranium mine, and they obtained uranium enrichment 由 steven 于 2006-10-10, 02:09:28:

• enrichment uranium to weapon grade is hard, and it is a - steven (171 bytes) 2006-10-10, 18:09:56 (106367)

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