曝光后的感光板乳剂经显影后，只有曝光区感光过的卤化银还原为银，未感光的卤化银仍留在乳剂内，这部分卤化银见光后仍能被感光而变黑，影响显影后的影像。
adj. fixative
misc. fixing bath
该方法应用于照片和定影液废水中微量银的测定，结果满意。
The method was used to determine the trace silver in photograph and fixation waste water with (satisfactory) results.
文章以广州某医院的废定影液作试料，采用电解法回收废定影液的银。
In the paper, waste fixative of a hospital in Guangzhou taken as material and method of electrolysis was used to reclaim silver from waste fixative.
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