239Pu是易裂变核素可作为反应堆的核燃料。在热中子堆中钚吸收中子后经裂变产生的中子小于2.0，不能增殖。在快中子堆中通过铀-钚循环可以实现增殖。
“好奇”是一个多轮的火星巡航车，重约一吨，十英尺长，算上到桅杆顶端约有7英尺高，由一台钚燃料的发电机驱动。
Curiosity is a beast of a rover, weighing one ton, measuring ten feet long by seven feet tall (at the top of the mast), and powered by a plutonium-238 fueled electrical generator.
这就终将会允许印度从美国已经用尽的燃料中提取出钚。
This will eventually allow India to extract plutonium from spent reactor fuel of American origin.
日本通过混合钚和铀以制造混合氧化燃料的设施中也已存在类似的问题。
Japan has had similar discrepancies at a plant that blends plutonium with uranium to make mixed-oxide fuel.
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