底片图 meaning in English

negative map
negative pattern

Industrial radiography . determination of the speed and average gradient of film - based image receiving systems for use in the energy range from 50 kev to 300 kev
工业放射学.能量范围从50kev至300kev用底片图象接收系统感光度和反差平均值的测定
Industrial radiography . determination of the speed and average gradient of film - based image receiving systems for use in the energy range from 300 kev to 1 , 5 mev with iridium 192
工业放射学.能级从300kev至1 . 5mev的铱192用底片图象接收系统感光度和反差平均值的测定
Non - destructive testing . industrial neutron radiography . determination of the speed and average contrast of silver based film image reception systems using electrons with an energy less than 200 kev
无损检验.工业用中子辐射照相术.用能量低于200kev的电子进行银盐底片图象接收系统的感光度和反差平均值的测定