radioactivity造句

• Overburden had concealed the radioactivity .
  覆盖层屏蔽掉了放射性。
• Natural radioactivity contains a store of valuable information .
  天然放射性包含着许多有价值的信息。
• Radioactivity is found on both sides of the failure plane in all cases .
  破断面的任何一侧都发现有放射性。
• This example illustrates the great sensitivity of the radioactivity method .
  这个例子说明了放射性方法很灵敏。
• Radioactivity is the ejection of particles or radiation from the nucleus .
  放射性是原子从核中射出粒子或辐射的现象。
• The atomic bomb is characterized by the grave injuries caused by radioactivity .
  原子弹具有由辐射引起严重损伤的特点。
• The radioactivity of a sample is defined to be the number of disintegrations per unit time .
  样品的放射性定义为每单位时间的蜕变数目。
• At the surface, radioactivity of the conglomerates is locally as high as 30 x background .
  在地表，砾岩的局部地段的放射性高达30倍本底值。
• In practice it would be possible to measure radioactivity one thousand fold less than this .
  在实际上，比这个值小一千倍的放射也有可能测定。
• At the same time radioactivity injured the inner tissues of the skin and formed keloids on the surface of the skin .
  辐射力同时破坏组织，在表皮上形成瘢痕。
• The heat production in rocks due to radioactivity is highest in the acid rocks and lowest in the ultra-basic rocks .
  岩石的放射作用热产率以酸性岩类最高，超基性岩类最低。
• When the bubble expands, however, and some of the water evaporates again, some of the radioactivity may return to the bubble .
  可是当汽泡膨胀和一部分水又重新汽化时，某些放射性又回到汽泡中去。
• Radioactivity provides an extremely sensitive method of analysis since disintegration of individual nuclei are monitored .
  因此放射现象可以监视每一个核的裂变，因此放射现象提供了一个极灵敏的分析方法。
• This is due almost entirely to the radioactivity of the fission products present in the weapon residues(or debris)after the explosion .
  它们几乎全部由爆炸后出现在武器残骸（或碎块）中的裂变产物的放射性所引起的。
• By tracing the fate of the radioactivity within a living organism, one can learn the normal pathway of this carbon compound in that organism .
  通过追踪放射性在活体内的去向，人们能得知这种碳化合物在体内正常的途径。
• The environmental engineer has an interest in nuclear chemistry as the radioactivity emanating from changes in unstable elements can result in hazards to health .
  环境工程师对核化学感兴趣的是不稳定元素变化时放射出的放射性对人体健康的危害。
• Dimensions of test tubes for radioactivity measurements
  用于放射性测量的试管尺寸
• Cloud chambers are used for studying radioactivity
  云室是用于研究放射活动的。
• Rules of radioactivity inspection for import minerals
  进出矿产品放射性检验规程
• Standard practices for the measurement of radioactivity
  放射性测量的标准实施规范