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结构力学(二) > 图示桁架各杆EA相同, C点受水平荷载P作用,则AB杆内力[img src="https://img.haodaxue.net/uploadimg/image/20200615/20200615143226_73571.png" alt="" /> [img src="https://img.haodaxue.net/uploadimg/image/20200615/20200615143234_53330.png" alt="" />