浑圆度取决于边角的锐度或曲率半径.Roundness depends on the sharpness or radius of curvature of the edges.形状描述该颗粒外形,不考虑颗粒边角的锐度.Shape describes the form of the particle without reference to the sharpness of its edges.主要指标LogMAR视力 、 最佳矫正视力 ...
目的探讨治疗陈旧性舟状骨骨折的手术方法.Objective To investigate the surgical procedures for treatment of old scaphoid fracture.先天性舟状骨裂是很罕见的病例.Congenital bipartite scaphoid is a very rare condition.手摇钻也可以减少导针在舟状骨内折断的风险.Hand drilling also de...