Rays are emitted from the nuclei of unstable atoms during radioactive decay , while x - rays are from the electron cloud as the result of electron excitation 射线是由不稳定原子核射出的，而射线则由受激发的电子云射出。
From their work emerged the picture of radioactive decay that is still valid - a violently disruptive explosion of a single atom 根据他们的工作，展现出至今仍然成立的关于放射性衰变的图象- -单个原子的强烈的分裂性爆炸。
Rays are emitted from the nuclei of unstable atoms during radioactive decay , while x - rays are from the electron cloud as the result of electron excitation 射线是由不稳定原子核射出的，而射线则由受激发的电子云射出。
His work was done before the discovery of radioactivity and the understanding that natural radioactive decay provides a source of heat to the earth 他的工作是做了，才发现放射性和谅解，即天然放射性衰变提供热源，以地球。
Probably the best source for random numbers in common use is measuring radioactive decay . it s not at all easy to bias , and comes with relatively little natural bias 最后，我们将解释如何在您自己的应用程序中建立防盗自动警报，以及侵入探测的现代方法可能对您有何帮助。
And generate a considerable amount of heat due to radioactive decay . hence , it would be transported for storage in a " spent fuel pool " inside the fuel building situated adjacent to the containment building 及因衰变而产生的馀热，因此会被传送至毗邻安全壳厂房的燃料厂房内的"乏燃料池"贮存。
And generate a considerable amount of heat due to radioactive decay . hence , it would be transported for storage in a " spent fuel pool " inside the fuel building situated adjacent to the containment building 及因衰变而产生的馀热，因此会被传送至毗邻安全壳厂房的燃料厂房内的"乏燃料池"贮存。
A new type of battery based on the radioactive decay of nuclear material is 10 times more powerful than similar prototypes and should last a decade or more without a charge , scientists announced 一种以核子物质放射衰变为基础的新型电池，电力比类似的原型强上十倍，在不充电的情况下应可维持十年以上，科学家宣布。
The spent fuels would be stored and cooled in the " spent fuel pool " inside the fuel building for about 10 years to allow for the radioactive decay of its nuclides and removal of the residual heat “乏燃料”会放在燃料厂房内水池中贮存约十年，进行冷却排除馀热，以及待其放射性因衰变而随时间减退后，再运往西北偏远地区进行
As soon as the plants or animals die , the uptake of carbon - 14 will cease and the amount of carbon - 14 will decrease with time due to radioactive decay . the half - life of carbon - 14 is about 5 , 730 years 但当植物和动物死去，他们便会停止吸取碳- 14 。碳- 14的份量因衰变会随时间而减少，每经过一个半衰期(即大约5 , 730年) ，含量便会减半。
