soilbag土工袋soiln.土地；土壤；污物，粪便v.弄污soil thermal properties土壤热物性soil use classification土壤利用分类Soil water and salinity土壤水盐soil regionaliztion map土壤区划图Soil NOa--N content土壤硝态氮Soil management measure农田管理措施soil-tool interaction土壤机器相互作用soil fracture apparatus土体断裂试验仪SOILS OF MT. HENGSHANsoil-pile interaction土与桩的相互作用