dredger fill soil layer
dredger fill sandy soil
dredger fill pulverized-coal-ash
heavy clay and saliniferous dredger fill
mud fluid of dredger fill
bare soil and soil with crop
composite soil nailing soil nailing and micro-pile
Coupled transport of soil water and soil heat
improving soil and enriching soil fortility
movement of soil water and soil salt
moving soil and improving soil fertility
Paddy soil derived from red soil
Paddy soil from red soil