1. 安庆师范学院 物理与电气工程学院,安徽安庆 246011;2. 北京大学 湍流与复杂系统国家重点实验室;3. 北京大学 工学院 力学与空天技术系,北京 100871
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SIGN-OSCILLATING PROPERTY OF STIFFNESS MATRIX OF DIFFERENCE DISCRETE SYSTEM AND QUALITATIVE PROPERTIES OF BEAM WITH OVERHANG
1. Department of Physics, Anqing Teachers College, Anqing Anhui, 246011, P.R.China;2. State Key Laboratory for Turbulence and Complex Systems, Peking University, Beijing, 100871, P.R.China;3. Department of Mechanics and Engineering Science, Peking University, Beijing, 100871, P.R.China
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