alluvial

冲积的, 淤积的英释中释adjmade of soil left by rivers, lakes, floods etc

1 alluvial fan,冲积扇；扇形地；扇状地

2 alluvial plain,冲积平原；冲积系；冲积平野

3 alluvial soil,淤积土；冲积土

4 alluvial gold,砂金

1 alluvial flood plains.冲积泛滥平原