小型Ｘ射线机环境辐射水平孟宪新刘敬周张氵郭泽（山东省滕州市卫生防疫站，滕州２７２５００）近几年小型（１０～１５ｍＡ以下）Ｘ射线机由于携带方便，在农村使用较多，但此类机防护性能较差。为此，我们于１９９２年至１９９４年对２２个乡镇４６处透视服务站５２台携... In recent years, small (less than 10 ~ 15mA) X-ray machines are more commonly used in rural areas due to their easy portability. However, Class machine protection performance is poor. To this end, we from 1992 to 1994 on 22 towns and 46 perspective service station 52 portable ...