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本文简要介绍了ＱＥ１４—４０／１Ａ电子枪的结构、性能和特点，给出了电子偏转曲率半径以及偏转磁场与电流的关系曲线
In this paper, the structure, performance and characteristics of the QE14-40 / 1A electron gun are briefly introduced. The electron deflection radius of curvature and the relationship between deflection magnetic field and current are given