摘要：钢管混凝土结构节点构造复杂，对其研究尚存在很多问题。
Abstract: the structure of concrete filled steel tubular structures is complex, and there are many problems in its research.
不锈钢管件的加工方法也有很多种。
There are many kinds of processing methods of stainless steel pipe fittings.
我学习传统中国舞蹈很多年了，但钢管舞是完全不同的。
I've been studying traditional Chinese dance for many years, but this is totally different.
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