通过对暗室处理过程中各个环节的控制，有效提高射线底片的质量。

Through controlling the each step in process of darkroom disposal, improve the quality of the sciagram efficently.

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着重在设备的选用、工艺参数的控制、胶片的选择、暗室处理及缺陷的判定与处理等方面进行一些介绍和探讨。

Stressed on the discussion of apparatus choice, technology parameters control, film choice, darkroom treatment, defect judgement and treatment.

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受到当时条件的约束——暗室靠马力来维持供电而且那时胶卷感光速度也慢得多，可以理解，布雷迪的战争照片是拍的时候容易、后期处理却很难。

Tethered as he was to his equine-powered darkroom and with film speeds being much slower then, Brady produced war photos that are understandably light on the action and heavy on the aftermath.

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