| 单词 | percolation zone |
| 释义 | percolation zone [pǝr·kǝ`lā·shǝn ´zōn] HYDROLOGY The area on a glacier or ice sheet where a limited amount of surface melting occurs, but the meltwater refreezes in the same snow layer and the snow layer is not completely soaked or brought up to the melting temperature. |
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