 |
| |||
| underwater concreting; concreting with tremie method | |||
| 灌筑水下 混 凝土: 10 phrases in 4 subjects |
| Engineering geology | 1 |
| Metallurgy | 1 |
| Rail transport | 2 |
| Technology | 6 |
|
| |||
| underwater concreting; concreting with tremie method | |||
| 灌筑水下 混 凝土: 10 phrases in 4 subjects |
| Engineering geology | 1 |
| Metallurgy | 1 |
| Rail transport | 2 |
| Technology | 6 |