soilbag土工袋soiln.土地；土壤；污物，粪便v.弄污soil particle diameter土壤粒径soil moisture sampling土壤潮湿采样soil and sedimentation侵蚀泥沙soild--state relay固态继电器soil surface roughness土壤表面粗糙度soil chemical fixation土壤化学固定soil in tree root zone林木根区土壤soil creep deformation土体蠕变Soild phase extraction固相吸附soil colloid chemistry土壤胶体化学