| 1. | The escape of neutrons occurs at the exterior of the uranium(or plutonium)material .
中子的逸漏发生于铀（或钚）块的外表面。 |
| 2. | It is possible to use a plutonium foil as a filter to remove the second-order contamination .
可用钚箔作为过滤器消除二级干扰。 |
| 3. | Indirect ionization by neutrons can also result from fission of plutonium or uranium isotopes .
通过使钚或铀同位素裂变，中于也能产生间接的电离作用。 |
| 4. | However, the actual weight of uranium or plutonium in such a weapon is greater than this amount .
可是，在一枚那样的核武器中，铀或钚的实际重量要比这个数字大得多。 |
| 5. | The results in the table may be taken as being applicable to either uranium-233, uranium-235, or plutonium-239 .
可以认为表中所列数据同样适用于铀-233、铀-235或钚-239。 |
| 6. | Both uranium and plutonium are radioactive, and their activity consists in the emission of what are called "alpha particles" .
铀和钚二者都具有放射性，它们的放射性包括放射所谓粒子。 |
| 7. | Determination of plutonium in soil - ion exchange method
土壤中钚的测定离子交换法 |
| 8. | Nuclear - grade plutonium dioxide powder , sinterable
核纯级可烧结的二氧化钚粉末的规格 |
| 9. | Dangerous emissions radiate from plutonium
危险的辐射物从钚放射出。 |
| 10. | Test method for plutonium by controlled - potential coulometry
控制电势库仑法测定钚的试验方法 |
