掘转( Torsion 第三拿扭转( Torsion) DF3-1扭转的概念和实例 (Concepts and example problem of torsion D3-2扭转内力的计算 (Calculating internal force of torsion) D§3-3薄壁圆筒的扭转 (Torsion in thin-wall circular tube) 53-4圆轴扭转的应力分析及强度条件 (Analyzing stress of circular bars strength condition)(Torsion) 第三章 扭 转 (Torsion) §3-1 扭转的概念和实例 (Concepts and example problem of torsion) §3-2 扭转内力的计算 (Calculating internal force of torsion) §3-3 薄壁圆筒的扭转 (Torsion in thin—wall circular tube) §3-4 圆轴扭转的应力分析及强度条件 (Analyzing stress of circular bars & strength condition)