在诸如楼板之类的水平构件中，过剩水分增加会导致顶部的薄弱浆沫层。
In horizontal elements, such as floor slabs, excess water rises and causes a weak laitance layer at the top.
上海中心大厦在长期荷载作用下结构竖向构件间的差异变形会在水平构件中产生较大的次内力。
The differential deformation between vertical structural members of the Shanghai Tower can cause secondary internal forces in horizontal structural members.
两个箱型梁水平构件构成了教室与展区的天花板及地板，并在理论教室和展示区的配置考量下而设计成不同的高度。
That horizontal member of the portal frame consists of two longitudinal pre-stressed concrete box type beams overpassing the big span.
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