 |
| |||
| uranium radioactive series; 4n + 2 series; uranium-radium radioactive series; uranium radioactive family; radioactive family of uranium; 4n + 2 family; uranium-radium radioactive family; radioactive family of uranium-radium | |||
| uranium family | |||
| uranium series | |||
| семейство урана: 28 短语, 2 学科 |
| Радиоактивное излучение | 27 |
| 马卡罗夫 | 1 |