The slabs and walls which enclose thelower floor are concrete, while the uppermost levels are a composite steel andheavy timber structure with wood-frame infill.
2
塔楼的结构则是钢结构框架和混凝土楼板，配以水泥柱和核心筒。
The supporting structure of the tower comprises a steel-reinforced concrete skeleton with level-flat ceilings, struts and cores.
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