 |
| |||
| energy conservation in construction | |||
| 建筑节能: 8 phrases in 4 subjects |
| China | 4 |
| Hydroelectric power stations | 1 |
| Rail transport | 1 |
| Technology | 2 |
|
| |||
| energy conservation in construction | |||
| 建筑节能: 8 phrases in 4 subjects |
| China | 4 |
| Hydroelectric power stations | 1 |
| Rail transport | 1 |
| Technology | 2 |