Results show that the fire resisting performance of the columns is efficient.

表明内（圆）钢管增强方钢管混凝土柱的耐火性能是明显的。

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Results show that the fire resisting performance of the columns is efficient.

表明内（圆）钢管增强方钢管混凝土柱的耐火性能是明显的。

youdao