sedimentn.沉淀物
sediment charge泥沙含量
sediment tester杂质度测定器
sedimental clay沉积黏土
sediment record沉积记录
sediment funnel排沙漏斗
sediment sample泥沙试样
sediment budget泥沙概算
sediment motion泥沙运动
sediment origin物质来源
sedimentary gap沉积间断