The differentiations of calculating lacunarity indices of shifting sand dunes which have same area but different distribution forms are obvious.
详尽地分析了流动沙丘面积相同，分布形式不同而产生的间隙度指数差异。
The fencing effect of the net fence in shifting sand area also shows difference among three wind directions.
流沙区尼龙网栅栏的防沙效益亦表现出在三组不同风向上的差异。
In coastal area deep foundation pit excavating meets problems of slope collapsing and shifting sand due to high water level and the sand soil geological condition.
沿海地区水位高，地质条件以砂土为主，大面积砂土深基坑开挖易坍塌或形成流砂，给施工带来巨大的困难。
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