短语词组短语fluvial alluvium 河铃积层bedded alluvium 层状冲积层;详细翻译thick alluvium 厚冲积层;厚松散层marine alluvium 海洋冲积层;海成冲积层freshwater alluvium 淡水冲积层Alluvium deposit 冲积层alluvium m 冲积层loose alluvium 松散冲积层old alluvium 老冲积层;古冲积层 返回 alluvium