sedimentatevt.沉积
sedimentn.沉淀物
sediment transport mechanism输沙机理
sedimentary paleoenvironment义县组
sedimentary organic material沉积有机物
sedimentary-tectonic event沉积-构造事件
Sediment concentration scale含沙量比尺
sediment-runoff regulation调水调沙
sedimentation characteristics沉积特征
sediment of city sewage plant城市污水厂沉积物