| 1. | Alpha particles emitted by radioactive nuclei have energies of a few mev . 由放射性原子核发射出的粒子能量一般为几个Mev。 |
| 2. | Each radioactive nucleus of a particular kind is responsive to a fixed decay probability per unit time . 每个特定类型的放射性原子弹对单位时间内一个固定的衰变几率作出响应。 |
| 3. | Alpha particles emitted by radioactive nuclei have energies of a few mev 由放射性原子核发射出的粒子能量一般为几个mev 。 |
| 4. | Investigation of radioactive nucleus structures by breakup at intermediate and high energy 通过中高能碎裂反应研究奇异核的结构 |
| 5. | Assume that we have 12 , 800 radioactive nuclei at the start . let s see what happens after several half - lives 假设以12 , 800颗放射性原子核作为开始,让我们看看经过多个半衰期后的结果。 |
| 6. | Assume that we have 12 , 800 radioactive nuclei at the start . let s see what happens after several half - lives 假设以12 , 800颗放射性原子核作为开始,让我们看看经过多个半衰期后的结果。 |
| 7. | An unstable radioactive nucleus can become stable by emitting particles and energy - a process called " decay " 一颗不稳定即具有放射性的原子核在放射出粒子及能量后可变得较为稳定,这个过程称为衰变。 |