Forumlas for stress and strain 书名原文: Forumlas for stress and strain. fundamentals of cyclic stress and strain Roark's formulas for strain and stress Fundamentals of cyclic stress and strain Stress and strain 书名原文:Stress and strain 其他题名：Fundamentals of cyclic stress and strain 并列题名：Fundamentals of cyclic stress and strain 并列题名：Stress and strain