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. Halbach K.Nucl.Instr.and Meth,1980,169:1—10 2. GUO Shuo-Hong.Electrodynamic.Beijing:High Education Publisher,1978.109—111(in Chinese)(郭硕鸿.电动力学.北京:高等教育出版社,1978.109—111)
. Halbach K.Nucl.Instr.and Meth,1980,169:1—10 2. GUO Shuo-Hong.Electrodynamic.Beijing:High Education Publisher,1978.109—111(in Chinese)(郭硕鸿.电动力学.北京:高等教育出版社,1978.109—111)