fission

• Nothing less than a fission bomb can ignite a thermonuclear reaction .
  威力比一个裂变炸弹小的任何东西都不能点燃热核反应。
• Niels bohr and john wheeler published a theory of the dynamic process of fission .
  尼恩、波尔和惠勒发表了裂变的动力过程的理论。
• The world at large was less well prepared for the exploitation of nuclear fission .
  然而对于核裂变的利用，人类社会还缺乏足够的准备。
• As a result, there is less attenuation of the gamma rays from the fission products .
  这样一来，从裂变产物中发射出来的射线的减弱就要少一些。
• The laboratory has designed, tested and evaluated a lightweight, low-yield fission device .
  该试验室设计，试验和鉴定了一种轻巧、低当量的裂变装置。
• Indirect ionization by neutrons can also result from fission of plutonium or uranium isotopes .
  通过使钚或铀同位素裂变，中于也能产生间接的电离作用。
• Uranium analysis by the emission of delayed neutrons, following fission of u235, has been described by amiel .
  阿密尔论述了应用U235裂变后产生的缓发中子流分析铀的方法。
• Essentially, all the neutrons and part of the gamma rays are emitted in the actual fission process .
  从根本上说，所有的中子和一部分射线都是在裂变实际的过程中放射出来的。
• Nuclear fission has contributed to our society some new phrases-- "critical mass" and "critical size" .
  原子核裂变给我们的社会带来了一些新词汇--“临界质量”和“临界大小”。
• The transmission factor describes the gradual opening of a fission channel as the energy approaches the fission barrier .
  透射因子描述了当能量趋近于裂变势垒时裂变逐渐地开放。