A shipment of bomb-grade uranium arrived at a secure facility in Russia on Monday, sent from a research reactor in Poland as part of a race to secure dangerous radioactive material around the world.
Getting uranium from 20% enriched to the 90% or so needed for a bomb takes a lot less effort than getting (uranium from 20%) to the original 3.5% in the first place.
想要将浓度20%的铀浓缩至爆炸所需大约90%的浓度比最初(移后)浓缩至最初3.5%要简单很多。
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Getting uranium from 20% enriched to the 90% or so needed for a bomb takes a lot less effort than getting to the original 3.5% in the first place.