Not fission, whereby uranium and plutonium breaks up in pieces, but fusion.

不是裂变，靠那个铀和钚，变成碎片，而是聚变。

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The uranium or plutonium isotopes are referred to as "fissile," which means we can use them to induce fission by bombarding them with free neutrons.

铀或钚的同位素被称为裂变材料，即我们可以利用自由中子去轰击它们来产生裂变反应。

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Nuclear energy, which is the fission of uranium or plutonium, was very popular in the '70s, but it has become a little bit less popular lately.

核能，是铀或，钚的裂变，在70年代很受欢迎，但最近受欢迎程度，有所下降。

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According to papers filed with the Blue Ribbon Commission, the current research involves faster and simpler processes for separating uranium and plutonium from other fission products in spent fuel and from minor elements like americium and curium.

FORBES: U.S. nuclear fuel rods to sit in pools -- like those that failed in Japan -- until 2050

Normal fission involves breaking uranium or plutonium atoms up by hitting them with neutrons.

ECONOMIST: A novel form of fusion power: Psst, kapow! | The

Nuclear fission, generally fuelled by uranium or plutonium, heats up water which evaporates.

BBC: Will Japanese crisis curb the rise of nuclear power?