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| circulation | |||
| overturn The circulation, especially in the fall and spring, of the layers of water in a lake or sea, whereby surface water sinks and mixes with bottom water; it is caused by changes in density differences due to changes in temperature, and is especially common wherever lakes are icebound in winter; limnology | |||
| recirculation | |||
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| overturn limnology | |||
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cirkulation : 21 短语, 6 学科 |
| 冶金 | 1 |
| 化学 | 1 |
| 医疗的 | 6 |
| 技术 | 2 |
| 环境 | 3 |
| 生命科学 | 8 |