... 混凝土输送管concrete conveying pipe 混凝土空心板concrete core slab 混凝土养护concrete curing ...
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concrete for prestressed core slab 预应力空心板砼
concrete e core slab 混凝土空心板
prestressed concrete hollow-core slab 预应力混凝土圆孔板
precast concrete hollow-core floor slab 预制混凝土空心板
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Prestressed concrete hollow-core slab is a widely used structural element.
预应力圆孔板是被广泛采用的一种楼面构件。
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The structure is defined by a system of precast concrete porticos and hollow core slab roofing.
预制混凝土柱和空心屋面板构成了建筑的结构系统。
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