slab-on-grade:Slab-on-grade or floating slab foundations are a structural engineering practice whereby the concreteslab that is to serve as the foundation for the structure is formed from a mold set into the ground. The concrete is then placed into the mold, leaving no space between the ground and the structure.
slab-on -grade也就是一种混凝土基础形式，其他翻译有点扯。
