... graded colors梯度色调 graded river均衡河流 graded sediments分级沉积 ...
基于140个网页-相关网页
... graded bedding 粒级层 graded stream 均衡河流 graded material 级配材料 ...
基于6个网页-相关网页
·2,447,543篇论文数据，部分数据来源于NoteExpress
本文得到的主要结论如下：黄河流域人口分布非均衡现象明显，95%以上的人口集中在不到50%的土地上。
The conclusions are as follows:There was imbalanced distribution of population in Yellow River basin. More than 95 percent of the population is concentrated in less than 50 percent of the land.
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