NF A09-216-1985
无损检验.工业放射学.能量范围从50keV至1.5MeV用射线照相术底片和带有一个或两个荧光金属放大器屏的图象接收系统感光度和对比度平均值的测定
Non-destructive testing. Industrial radiology. Determination of the sensitivity and average contrast of image receiver systems based on radiographic film and consisting of one or two fluorometallic intensifier screens used in the energy range from 50 keV