研究了风栅铝片三轴铣削加工中装夹方法、刀具选择、走刀规划以及切削参数确定方法；
The clamping means, cutter selection, tool path planning and cutting parameters determination using three-axis machine for aluminum windshield pieces were studied.
应用此装置测量了不同分断条件下陶土灭弧室和栅片灭弧室内的介质强度恢复特性。
With this equipment, the dielectric recovery strength characteristics of ceramic chambers and deion plate chambers are studied.
结论：考虑病人的吸收剂量和避免影像失真，摄影焦-片距的选择应与滤线栅的焦距相匹配。
Conclusion: Considering the absorbed dose of the patients and avoiding the image distortion, it is suggested that the selection of focus-film distance should be matched with the tube and grid.
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