Therefore, it saves the structural space and reduces the average height of residential houses, and lift up the overall economical benefit of houses.
从而节省建筑空间，大幅度降低住宅的平均层高，提高住宅的综合经济效益。
Therefore, it saves the structural space and reduces the average height of residential houses, and lift up the overall economical benefit of houses.
从而节省建筑空间，大幅度降低住宅的平均层高，提高住宅的综合经济效益。
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