steel tube encased concrete
steel tube encased concrete
钢管包裹混凝土
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Based on results of test and calculation, it is concluded that the exterior steel-encased reinforced concrete frame-interior rc tube structures have very good seismic resistant performance.
试验和计算结果表明：外钢骨框架-内混凝土核心筒混合结构具有较好的抗震性能。
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