| |||
| 材料参考; 参考材料 | |||
|
material reference : 53 phrases in 13 subjects |
| Agriculture | 1 |
| Aviation | 4 |
| Chemistry | 21 |
| Earth sciences | 3 |
| Electronics | 4 |
| Geophysics | 1 |
| Metallurgy | 1 |
| Nuclear physics | 1 |
| Scientific | 1 |
| Space | 4 |
| Technology | 10 |
| United Nations | 1 |
| Water resources | 1 |
| |||
| 材料参考; 参考材料 | |||
|
material reference : 53 phrases in 13 subjects |
| Agriculture | 1 |
| Aviation | 4 |
| Chemistry | 21 |
| Earth sciences | 3 |
| Electronics | 4 |
| Geophysics | 1 |
| Metallurgy | 1 |
| Nuclear physics | 1 |
| Scientific | 1 |
| Space | 4 |
| Technology | 10 |
| United Nations | 1 |
| Water resources | 1 |