短语词组短語permeability coefficient of soil 土壤滲透系數permeability of unsaturated soil 非飽和滲透性gas permeability of soil 土壤透氣性gas -permeability of soil [土壤]土壤透氣性in -situ permeability of soil 地基原位滲透系數 返回 permeability of soil