| 1. | Most of the alpha particles would go right through the foil .
大多数粒子总是笔直地穿过簿箔。 |
| 2. | Thus the alpha particle is an exceptionally stable nuclear structure .
由此可见，粒子是一种特别稳定的核结构。 |
| 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. | Alpha particles are positively charged helium nuclei obtained from natural radioactive decay .
粒子是从天然放射性蜕变得到的带正电的氦核。 |
| 5. | The fact that the alpha particles travel right through the foil means they travel through the atoms .
粒子径直穿过簿箔这一事实意味着它们也穿过原子。 |
| 6. | Very few alpha particles from radioactive sources can travel more than 1 to 3 inches in air before being stopped .
在空气中从放射源放出的粒子在停止以前只有很少能穿过13英寸的距离。 |
| 7. | Standard test method for alpha particle radioactivity of water
水的粒子放射性的标准试验方法 |
| 8. | Alpha particle scattering analogue
粒子放射模拟 |
| 9. | Long range alpha particles
长射程粒子 |
| 10. | 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 。 |
