Therefore the research on the cause of BSR and blanking zone is very necessary in gas hydrate research. 因此在天然气水合物研究中,对似海底反射以及空白带形成机理进行研究是非常必要的。
Bottom simulating reflector ( BSR) and amplitude blanking zone with high velocity above BSR are the indicators of hydrate. 目前识别水合物的主要依据是BSR和其上具有高速特征的空白带。
Research on fine-blanking mechanism based on analyzing microstate of deformation zone 基于变形区显微状态分析的精冲成形机理研究
The thick-plate fine blanking process is very complicated since the deformation is focused on the small zone of the sheet metal and ended with fracture occurrence, and there are many theoretical problems to be solved, which limit the wide application of this technology. 由于厚板在精冲过程中材料的变形区域狭小,且以断裂方式结束,使得冲裁过程非常复杂,理论研究存在很多困难,限制了厚板精冲技术的推广应用。