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.
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。
3
Literature gives the film a higher aesthetic and ideological basis points, the novel has also absorbed movie's artistic creation techniques, For example montage.