| 1. | 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。 |
| 2. | Sealed radioactive sources - leakage test methods
密封放射源.漏泄试验方法 |
| 3. | Electrical measuring instruments utilizing radioactive sources
利用放射源的电测量仪表 |
| 4. | Sealed radioactive sources - leakage test methods
密封放射源的泄漏检验方法 |
| 5. | High activity cobalt - 60 sealed radioactive sources
高活度钴- 60密封放射源 |
| 6. | Certification of standardized radioactive sources
标准放射源的检验证书 |
| 7. | Use of radioactive sources for training purposes in schools
-于学校使用放射性物质作教学用途 |
| 8. | Sealed radioactive sources - general requirements and classification
密封放射源一般要求和分级 |
| 9. | Sealed radioactive sources - general requirements and classification
密封放射源.一般要求和分类 |
| 10. | Sealed radioactive sources ; requirements and classification
密封式放射性材料.第1部分:要求和分类 |
