工程实践表明，钢管混凝土既是一种高强、高性能结构材料，也是一种高效施工技术。
The engineering practice shows that STCC is not only a high strength and high performance structural material, but also a high efficient construction technique.
工程实践表明，钢管混凝土既是一种高强、高性能结构材料，也是一种高效施工技术。
The engineering practice shows that STCC is not only a high strength and high performance structural material, but also a high efficient construction technique.
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