瓯 (Axial tension& Compression, Shear)□ 第二章轴向拉伸和压缩 Chapter 2 Axial Tension and Compression D52-1轴向拉压的概念及实例 (Concepts and examples of axial tension compression) F2-2内力计算 ( Calculation of internal force) D52-3应力及强度条件 (Stress and strength condition)2 (Axial tension & Compression, Shear) §2-1 轴向拉压的概念及实例 (Concepts and examples of axial tension & compression) 第二章 轴向拉伸和压缩 Chapter2 Axial Tension and Compression §2-2 内力计算 (Calculation of internal force) §2-3 应力及强度条件 (Stress and strength condition)