roofed area meaning in Chinese

上盖面积

Discussion on exposed roof area of block chambering method in jinling iron mine
试论金岭铁矿阶段矿房法的顶板暴露面积
Fire safety of large roofs for buildings - fire exposure from below - part 1 : definitions , requirements and tests ; roof areas without openings
建筑物大型屋顶的防火安全.从下部起火.第1部分:定义
Fire safety of large roofs for buildings - fire exposure from below - part 2 : list of roofs , which fulfil the requirements of din 18234 - 1 ; roof areas without openings
防止从下部起火的建筑物用大型屋顶的防火安全.第2部