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BJ-4是国内首创的驻波型医用电子直线加速器,由北京医疗器械研究所研制并和航天部风华机器厂联合生产。是治疗深部肿瘤的重要医疗设备。
BJ-4 is the first wave-shaped medical electron linear accelerator in China, developed by Beijing Institute of Medical Devices and co-produced with Fenghua Machinery Factory of Ministry of Aeronautics and Astronautics. Is an important medical device for the treatment of deep tumors.