 |
| |||
| 上游段，水，水域，水位; 河〔水〕源; 源流 | |||
| 上游水 | |||
| 水头 | |||
| 河源 | |||
| 源头 | |||
| 水源; 河源头; 河流上游 | |||
| 上游 | |||
| 涌水区; 河源头; 河源 (段); 河流源头; 上水流; 上层水; 上游水域; 上游水面; 上游河段 | |||
| headwater: 54 phrases in 9 subjects |
| Architecture | 1 |
| Bridge construction | 3 |
| Construction | 1 |
| Desert science | 2 |
| Earth sciences | 1 |
| Engineering geology | 3 |
| Hydroelectric power stations | 6 |
| Soil science | 1 |
| Technology | 36 |