soilbag土工袋soiln.土地；土壤；污物，粪便v.弄污soil micro-morphology土壤微形态Soil nitrogen fertility土壤氮索肥力soil apparent viscosity土壤表现粘度soil preparation method整地方式Soil nutrients research土壤养分研究soil mass reinforcemtnt土体加固soil triaxial apparatus土工三轴实验仪soild state transmitter固态发射器Soil macro-arthropods大型土壤节肢动物soil work-grille shed土工格栅