The columns in four of the framed specimens used circular steel tubes while the rest two were square tubes.
框架中的柱有四个使用圆形钢管，而剩下的两个是方形管。
This paper analyses the work conditions and the property requirements of circular saw blade for cold cutting steel tubes.
分析了冷切钢管圆锯片的服役条件和所要求的性能。
This paper analyses the work conditions and the property requirements of circular saw blade for cold cutting steel tubes.
分析了冷切钢管圆锯片的服役条件和所要求的性能。
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