 |
| |||
| underwater concreting; concrete placing in water | |||
| 灌注 水下混凝土: 12 phrases in 3 subjects |
| Bridge construction | 4 |
| Hydroelectric power stations | 1 |
| Technology | 7 |
|
| |||
| underwater concreting; concrete placing in water | |||
| 灌注 水下混凝土: 12 phrases in 3 subjects |
| Bridge construction | 4 |
| Hydroelectric power stations | 1 |
| Technology | 7 |