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从侧视式孔内电视系统视场角恒定这一原理出发，在理论上分析了利用该电视系统能够直观而简便地测量计算出孔的孔斜，在实验中得到了证明。
Starting from the principle that the view angle of the television system in the side view hole is constant, the hole inclination of the hole is measured and calculated in an intuitive and simple way using the television system theoretically. The experiment is proved.