The problem of the lee slope stability of dune is equivalent to the extremal problem of a functional of two-variant function with a variable boundary in this paper.
将沙丘背风坡的稳定性问题等价于一个双参变量函数的待定边界的泛函极值问题。
The local aeolian geomorphic unit is chiefly some small-scale deflation shallow valley deflation relic hillock, dune and soil hillock etc. that generate facing wind slope on ridge-mound and in hollow.
当地的风成地貌主要是一些发育在垄岗的迎风波及洼地中的小型风蚀浅谷、风蚀残丘、沙丘、土豆等。
The local aeolian geomorphic unit is chiefly some small-scale deflation shallow valley deflation relic hillock, dune and soil hillock etc. that generate facing wind slope on ridge-mound and in hollow.
当地的风成地貌主要是一些发育在垄岗的迎风波及洼地中的小型风蚀浅谷、风蚀残丘、沙丘、土豆等。
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