| 单词 | gradation |
| 释义 | gradation [grā`dā·shǝn] GEOLOGY 1. The leveling of the land, or the bringing of a land surface or area to a uniform or nearly uniform grade or slope through erosion, transportation, and deposition. 2. Specifically, the bringing of a stream bed to a slope at which the water is just able to transport the material delivered to it. |
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