sand cushion是什么意思

用法例句

Through the construction example of one comprehensive building,this paper introduces the method of sand cushion construction for soft-soil foundation under higher water level,and probes into some problems needing attention in the construction.

通过某综合楼的施工实例,介绍了在高水位软弱土地基上进行沙垫层施工的方法,并对施工中应注意的问题进行了探讨。