用拉格朗日函数分析不同模量静不定桁架内力
吴晓
Analysis on the Different Modulus Statically Indeterminate Truss Internal Force by Lagrange Function
WU Xiao
力学季刊 . 2015, (3): 541 -546 .  DOI: 10.15959/j.cnki.0254-0053.2015.03.022