 |
| |||
| 河滩砾石 | |||
| 河滩砂石; 沙洲砾石 | |||
| bar gravel: 7 phrases in 5 subjects |
| Desert science | 1 |
| Ecology | 1 |
| Hydroelectric power stations | 2 |
| Soil science | 1 |
| Technology | 2 |
|
| |||
| 河滩砾石 | |||
| 河滩砂石; 沙洲砾石 | |||
| bar gravel: 7 phrases in 5 subjects |
| Desert science | 1 |
| Ecology | 1 |
| Hydroelectric power stations | 2 |
| Soil science | 1 |
| Technology | 2 |