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。

youdao

Cold fusion and even controlled fission are way out of reach of being car fuel.

冷聚变，甚至控制核裂变对于汽车来说是遥不可及的燃料。

youdao

Few believe in fusion now, though uranium-powered fission reactors may be coming back into fashion.

尽管核裂变反应堆可能重归流行，但是现在很少有人相信核聚变。

youdao

Nuclear energy is released during fission and fusion.

WSJ: The New Nuclear Revolution

The good news is that the big names in nuclear energy -- like Areva, Hitachi, General Electric and Toshiba -- have recently been joined by a bevy of high-tech start-ups seeking to develop advanced nuclear-reactor designs for both fission and fusion energy production.

WSJ: The New Nuclear Revolution

So far, there are five fission and two fusion start-ups, among them Hyperion, NuScale and Tri Alpha.

WSJ: The New Nuclear Revolution