 |
| |||
| low water of river; lowest water level; minimum water level | |||
| |||
| trough | |||
| minimal flow | |||
| water shortage | |||
| low water | |||
| low flow Phase of lowest level of a water course; low water level; low flow | |||
| grave; minimum flow | |||
| lowest level | |||
|
etiage : 46 短语, 9 学科 |
| 冶金 | 2 |
| 地球科学 | 6 |
| 地质学 | 2 |
| 建造 | 3 |
| 技术 | 1 |
| 环境 | 1 |
| 生命科学 | 14 |
| 自然资源和野生动物保护 | 9 |
| 运输 | 8 |