单词：alluvial layer
alluvial layer的用法和样例：
例句
- Results of potential field modelling indicate that isolated, small volume, highly magnetic bodies embedded within the alluvial deposits of both areas produce the anomalies.位场模拟的结果表明，这种磁性异常是因为上述两地区的冲击层中存在的互相分离的小型高磁性体。
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