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| |||
| 落干; 落水指稻田 | |||
| 路面排水 | |||
| 地表水系 | |||
| 地表排水; 表面排水 | |||
| 地面排水系统 | |||
| 明沟排水; 地表面疏干法 | |||
| 地面排水 | |||
| |||
| 地面排水; 表面排水 | |||
| surface drainage: 29 phrases in 8 subjects |
| Agriculture | 1 |
| Bridge construction | 1 |
| Desert science | 1 |
| Engineering geology | 4 |
| Hydroelectric power stations | 3 |
| Oil / petroleum | 3 |
| Rail transport | 1 |
| Technology | 15 |
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