冲积物，冲积层矿床
1. 冲积土层;冲积物：alluvial clay 冲积黏土 | alluvial deposit 冲积土层;冲积物 | alluvial sand 冲积沙
2. 冲积砂矿：allochromatic color 他色,假色 | alluvial deposit 冲积砂矿 | alluvial diamond 金刚石砂矿
3. 冲积物：alloy steel 合金钢 | alluvial deposit 冲积物 | alteration 更迭
4. 冲积层：alluvial cone 冲积锥 | alluvial deposit 冲积层 | alluvial fan 冲积扇
noun
1. clay or silt or gravel carried by rushing streams and deposited where the stream slows down
Synonym: alluvial sediment alluvium alluvion