In recent years a large amount of work has been done on the optimization of civil engineering structures in design.
近年来国内外对土建结构设计的优化进行了大量工作。优化的对象涉及结构工程的各个方面。
Civil engineering structures are important part of national infrastructures that are directly related to People's Daily life.
土木工程结构是国家基础设施的重要组成部分，直接影响人民的生活和安全。
Nearly all civil engineering structures, ro of s, roads, and any concrete work have a run - off coefficient of about 95 per cent.
几乎所有的土木工程构筑物，屋顶、道路和所有的混凝土工程，其径流系数均为95左右。
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