Consider the total plasticity of these several kinds of prestrain a3 steel specimen . the total plasticity of tension - torsion - tension action was higher than that of torsion - tension and torsion - tension - tension action . but the max . values of their total plasticity were all greater than those of any single destructional form 考虑几种预应变下的a3钢试件的总塑性，拉伸-扭转-拉伸作用下的总塑性比扭转-拉伸和扭转-拉伸-拉伸作用下的总塑性有明显的提高。但它们的总塑性的最大值都大于单一破坏形式下的总塑性。
