Civil engineers build mathematical models of Bridges and other structures to calculate how much weight and stress they can bear before committing to an expensive construction phase.
土木工程师建造桥梁和其他结构的数学模型,从而在进入昂贵的实际建设阶段之前计算出所设计的结构能够承受多大的重量和压力。
The construction load bear by floor are changing with the position of floor and time.
期间楼层承担的施工荷载随楼层位置和时间不断变化。
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