Through studying the method of using the powder soil as the bottom basic unit of the superhighway, a kind of suitable steady type on mechanics and way-use performance was found. 摘要通过对粉性土这种特殊土用作高等级公路底基层，进行稳定方法研究，寻找一种力学性能和路用性能都适宜的稳定类型，从而为广大使用者提供参考。
An ample water supply is probably the greatest advantage of soil submergence for irrigated rice. 大量供水可能对灌溉水稻淹水土壤有很大好处。
