float sand造句

Based on some examples , geologic hazard problems , such as earthquake , geofracture , ground subsidence , collapse , water environmental depravation , landslide , dilapidation , mudrock flow , float sand , piping and yielding soil deformation etc . , are summed up generally during the course of development for chinese cities
以实例的形式，概要总结了中国城市发展过程中存在的地震、地裂缝，地面沉降、塌陷，水环境恶化，滑坡、崩塌、泥石流，流砂、管涌、软土变形等地质灾害问题；根据产生地质灾害的动力作用性质，对地质灾害进行了分类。
It's difficult to find float sand in a sentence. 用float sand造句挺难的