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随着我国工业和医疗卫生事业的发展,医用诊断X线机已较普遍地装备到工厂、农村公社卫生院或诊所;从事放射线诊断工作人员数逐年增加,据初步统计,我国从事射线工作和受射线检查人口频度数约15～20％。
With the development of our country’s industrial and medical and health undertakings, medical diagnostic X-ray machines have been more commonly equipped to factories and rural commune hospitals or clinics. The number of radiation diagnostic workers has increased year by year. According to preliminary statistics, China is engaged in ray work and by Radiographic examination of the population frequency of about 15 ~ 20%.