目的：分析副鼻窦病变CT扫描轴位片与冠状位片的优劣，探讨鼻窦扫描方法的最佳选择。
Purpose To select the best scanning method for accessory sinus lesions by comparing the advantages with the disadvantages of ct axial films and coronal films.
通过对插座连接焊片结构特点的分析，确定该冲压件的排样方案，设计了一副级进模。介绍了主要工作零件及模具总装结构设计。
Through analysis of structure of the socket weld connection pieces, determined the layout project, designed a progressive die. Introduced the design points of main parts and die structure.
运用该工艺生产的航空刹车副动片基本满足了磨损试验的特殊要求。
Aerial craft brake movable piece produced with new heat treatment process have basically met the special requirements of wear test.
运用该工艺生产的航空刹车副动片基本满足了磨损试验的特殊要求。
Aerial craft brake movable piece produced with new heat treatment process have basically met the special requirements of wear test.
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