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沙垄 [shā lǒng]
[地理] longitudinal dune
- 上游河段的床面为沙垄所覆盖，而下游河段则为平整床面。
In the upper reach the bed was dune covered and in the lower reach it was flat. - 沿沙垄顶部向两侧坡间延伸，开始出现发育较弱的藻结皮，脆而极易破损。
From the top of sand dune to slope area, there occurs the algae crust, which serves as the early stage of biological crust and is fragile to outside disturbance. - 这些结果对于探讨浅海区沙波、沙纹和沙垄等波状底床上泥沙输移的力学机制是很有意义的。
The conclusions are significant to study the mechanism of sediment transport over wavy beds such as sand waves, ripples and dune for the coastal environment.
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