The main estimation is the rugosity and the linear rugosity of the fracture surface. A set of theoretical models has been built.
评价的主要内容集中在裂隙面粗糙度和线粗糙度方面，并建立了一系列的理论模型。
2
Results Typical acoustic properties of complete PVD presented clearly the vitreous posterior boundary membrane echo, rugosity and slender wave form, which didn't connect with the eyeball wall;