Design and application of exposure remoter of mobile X-ray machine;
移动式X线机曝光控制遥控器的设计与应用
A study of exposure feature of focal plane steel shutter;
焦平面钢片快门曝光特性研究
Well-balanced negative can be obtained by right exposal and development,by which a picture with detailed shadow,rich gradution,and well balanced density can be produced.
正确的曝光和显影可以得到正常的底片,影纹清晰,层次丰富,密度适中,反差正常,可以制作出满意的照片。
To explore an ergonomic lighting level in local environment of armored car,subjects are requested to judge the direction of targets under low lighting,after accepting three kinds of compelling exposal,and the reaction time is recorded.