All patients showed different degree bending deformity and abnormal density of bone. 本研究的病例均有不同程度的骨弯曲变形和骨密度异常。
Understanding the deformation characters of Cap-type constraint bending process is very important to guide the design of technology for bent parts. 深入了解帽形强制弯曲变形规律对指导这类弯曲件工艺设计具有重要意义。
