医用电子直线加速器是目前医院中主要大型医疗设备之一，其维修（维护）工作涉及核物理，射频技术，电子自动控制，机械，制冷等十余类工程学科，进口设备（如：美国瓦里安，德国西门子公司）销售时，其售后服务保障中，只承诺停机率不高于3％－5％。国产设备由于基础工艺，国 The medical electron linear accelerator is one of the major medical equipments in hospitals at present. Its maintenance (maintenance) work involves more than ten engineering disciplines such as nuclear physics, radio frequency technology, electronic automatic control, machinery and refrigeration, and imported equipment (such as: American Warri When Siemens AG and Siemens AG sold their products, their service guarantees only promised that the downtime rate should not exceed 3%-5%. Domestic equipment due to basic processes, country