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核能发电的能量来自核反应堆中可裂变材料(核燃料)进行裂变反应所释放的裂变能。 The energy comes from nuclear power reactors in the fissile material (nuclear fuel) for the release of fission fission energy. | ||
裂变过程中裂变碎片的放射性很强。 In fission processes, the fission fragments are quite radioactive. | ||
这个图表给你们一个重要的,可裂变和可转换核素的,一些临界热能中子横截面的总结。 This chart gives you a summary of some of the critical thermal-neutron cross sections of important fissile and fertile nuclides. | ||
这也是易裂变同位素。 And this again is the fissile isotope. | ||
同时还需要足够多的、可裂变的原子核用于中子进行撞击，换句话说，需要一个临界质量。 There also need to be enough fissionable atoms about for the neutrons to bumpinto—in other words, a critical mass. | ||
最后到这个裂变碎片，它开始于，氙，结束于钕，那是最后的裂变碎片。 And down on this fission fragment it starts with xenon and ends with neodymium which is the last fission fragment. | ||
研究了弱中子源驱动下，裂变系统中子裂变链统计涨落问题的数值计算方法。 A numerical method of the statistics fluctuation problem of fission chains is studied for fission system driven by a weak neutron source. | ||
但他们并没有阻止自然地发生在来自核燃料和裂变产物的燃料棒上的裂变。 But they do not stop spontaneous fissions in fuel rods from fuel and fission products. | ||
智囊机构CarnegieEndowment的George Perkovich认为，巴基斯坦应向制弹用可裂变材料的生产禁令高举反对票。 George Perkovich of the Carnegie Endowment, a think tank, says Pakistan should lift its veto on a ban on the production of fissile materials for bombs. | ||
固体的燃料弹（陶式氧化物母体）是第一道防护，隔开裂变过程中产生的裂变放射。 The solid fuel pellet (a ceramic oxide matrix) is the first barrier that retains many of the radioactive fission products produced by the fission process. | ||
