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2000塢ͼʾּܣEIΪCת ǣԱεӰ죩12֣
2001ġ֪ͼʾṹи˵ֱΪ d,Լ EGma :1A y-z ƽڵתǦA2 A z ټ һ PʦA ı仯ֵǶ٣10 ֣
2001ʮнṹĵԱܡEG Ϊ֪6 ֣
2002֪qlEI
ֱ B תǡ10 ֣
2003ν֪ϵĵģ ELbh ϶ž q B ˮƽλ UBֱ λ VB˼ĵԱ U20 ֣
2004塢ṹͼʾ赯ɸնΪ K=5EI/L3 C Ӷ fc15 ֣
2004ʮṹͼʾ U ΪṹĵԱܣ ѧʲô
2004ʮһһڹ P1 P2 ͬ£12
ĹλƷֱΪ1 ͦ2 P1 1 ʱ 12 λƷֱΪ11 ͦ21 P2 2 ʱ 12 λƷֱΪ12 ͦ22֤P112= P2218 ֣ 2005ߡͼʾṹ A Ӷ FA ABCD Ŀն Ϊ EI15 ֣
2006ߡṹͼʾ֪ MEAּܸ EI Ϊ B תǣƼӰ죩ߵĴ ״10 ֣
2007塢֪ EI Ϊʹ x = L / 3 һյ㣬 Me1/ Me 2 ıֵʱõӶȡ15 ֣