论文简介： Walls play roles of load-bearing, enclosure and separation. Roof is top of the building as enclosure. Walls and the roof materials are very important in building for directly relation to the function, weight, cost, construction period and building consumption.
Walls play roles of load-bearing, enclosure and separation. Roof is top of the building as enclosure. Walls and the roof materials are very important in building for directly relation to the function, weight, cost, construction period and building consumption.
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