矿价上涨会增加钢厂成本，支撑钢价。
应用BSNFEM非线性有限元程序对偏心支撑钢框架进行了循环加载分析。
This paper applies nonlinear finite element program BSNFEM to analyze the behaviors of eccentrically braced steel frames under cyclic load.
翅膀是支撑钢翼双支柱，并固定在去除附着在机身和机翼的客舱与四架螺栓容易。
The wings are braced by dual steel wing struts, and are bolted to the fuselage at the cabin frame with four bolts for easy wing attachment and removal.
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