Research about dredger structure design methods inland and abroad .
国内外挖泥船结构设计方法探讨。
The current technological situation of combined mining with bulldozer and gold dredger and approaches to its perfection .
推土机-采金船联合开采的工艺现状及其完善途径。
The turbidity of the water , nutrient concentrations and concentrations of heavy metals may increase downstream the dredger or downstream outlet points from reclamation areas and in turn affects flora and fauna .
