Researchers at the University of Bristol have found a means of creating a battery capable of generating clean electricity for five millennia. 英国布里斯托大学的研究人员们发现了一种制造电池的方法,可产生能够使用5000年的清洁能源。 Scientists found that by heating graphite blocks - used to house uranium rods in nuclear reactors - much of the radioactive carbon is given off as a gas. 这一成果是科学家们通过加热石墨块发现的,这种石墨块在核反应堆中被用来容纳铀棒,其中大多数放射性碳都以气体的形式被释放出来。 This can then be gathered and turned into radioactive diamonds using a high-temperature chemical reaction, in which carbon atoms are left on the surface in small, dark-colored diamond crystals. 然后这些碳气体可用被收集起来、用高温化学反应制成放射性钻石,其表面都是一些以微小、呈黑色钻石晶体的形式而存在的放射性碳原子。 These man-made diamonds produce a small electrical charge when placed near a radioactive source. 当被置于一个放射源附近的时候,这些人造钻石能够产生一个小电荷。 The radioactive diamonds are then encased safely within a layer of non-radioactive diamond. The surface of a complete diamond emits less radiation than a banana. 这些放射性钻石随后被安全地包裹进一层非放射性钻石内。这样一个完整钻石系统表面发射出的辐射比一根香