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| circulation | |||
| recirculation | |||
| 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 | |||
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| overturn limnology | |||
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cirkulation : 21 צירופים, 6 נושאים |
| טֶכנוֹלוֹגִיָה | 2 |
| כִּימִיָה | 1 |
| מֵטַלוּרגִיָה | 1 |
| מדעי החיים | 8 |
| סביבה | 3 |
| רְפוּאִי | 6 |