D half, and a half out half Au balcony, out of their half-bed level projection area calculation construction area, curving side of the area with half of the warring construction area.

 
  • D,半挑半凹阳台,挑出部分按其底板水平投影面积的一半计算建筑面积,凹进部分按其交战面积的一半计算建筑面积。
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