 |
| |||
| ignimbrite; welded tuff | |||
| 熔 灰 岩: 37 phrases in 7 subjects |
| Desert science | 2 |
| Engineering geology | 2 |
| General | 2 |
| Geology | 1 |
| Hydroelectric power stations | 1 |
| Oil / petroleum | 6 |
| Technology | 23 |
|
| |||
| ignimbrite; welded tuff | |||
| 熔 灰 岩: 37 phrases in 7 subjects |
| Desert science | 2 |
| Engineering geology | 2 |
| General | 2 |
| Geology | 1 |
| Hydroelectric power stations | 1 |
| Oil / petroleum | 6 |
| Technology | 23 |