sedimenter沉淀分离器sedimentn.沉淀物sediment budget method输沙量法sedimentation analysis沉降分析,沉积分析,沉淀分析,沉淀分析法Sedimentary provenance沉积物源sedimentary evironment沉积环境sedimentary diagenesis沉积-成岩sedimentation settling沉降sediment storage basin蓄沙池sedimentary base level沉积基准面sediment- alteration沉积改造sediment flow behavior泥沙输出