快中子堆　　在核反应堆家族中，主要由快中子引起核裂变，并维持链式反应的核反应堆称为快中子反应堆，简称快堆。快堆的一个重要特点是在经济发电的同时，一方面消耗核燃料（铀－235），一方面又生产核燃料钚－239，而且能够达到所产多于所耗，实现核燃料增殖。　　发展快堆 Fast neutron reactors In the nuclear reactor family, nuclear reactors, which are mainly caused by fast neutrons, and maintain the chain reaction, are called fast neutron reactors, abbreviated as fast reactors. An important feature of fast reactors is that while the economy generates electricity, it consumes nuclear fuel (uranium-235) on the one hand, and produces nuclear fuel plutonium-239 on the other hand, and it can produce more than it consumes to achieve nuclear fuel proliferation. Development of fast reactors