The so-called net area is the use of space means that the surface projection of the buildings area of the outer wall should account for more than 1/2 high walls endodermis.
英
美
- 所谓净面积是指上述各使用空间墙皮的投影所包围的面积,内墙皮应占墙面高度1/2以上的墙面内皮。