| 1. | Fission bombs use highly enriched fuel . 裂变原子弹使用高度浓缩燃料。 |
| 2. | Each of the states splits up into pairs of levels . 每一种能态都将裂变成两种能极。 |
| 3. | When atoms split, the process is called "fission" . 原子分裂时,其过程被称为“裂变”。 |
| 4. | The fission products formed are highly radioactive . 所生成的裂变产物具有很强的放射性。 |
| 5. | The discovery of fission was a seed dropped on fertile ground . 裂变的发现犹如种子落入沃土。 |
| 6. | The amount of material produced during fission is insignificant . 裂变时产生的物质数量是不够的。 |
| 7. | The average fission width can be obtained from a statistical argument . 能够从统计理论得到裂变宽度。 |
| 8. | Uranium fission may be accomplished by either fast or slow neutrons . 铀的裂变可用快中子或慢中子来完成。 |
| 9. | Nuclear fission would have been a dramatic discovery at any time . 在任何时候,原子核裂变都会成为引人注目的发现。 |
| 10. | Nothing less than a fission bomb can ignite a thermonuclear reaction . 威力比一个裂变炸弹小的任何东西都不能点燃热核反应。 |