求翻译：以后每个工作日的第一班，首先应取出一条胶片在同样标准下进行暗室处理。然后将其密度值与基准密度值进行比较，如果变化量超过0.1，则该溶液作废。是什么意思？

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each working day after the first class, it should first be removed from a film in the same standard darkroom under processing. And then the density value compared with baseline density value, if you change the volume exceeds 0.1 solution set aside.

Later each working day first class, first will be supposed to take out a film to carry on darkroom processing under the similar standard.Then carries on its density value and the datum density value the comparison, if the change quantity surpasses 0.1, then this solution becomes invalid.

Every weekday after the first class, you first take out a film under the same criteria for darkroom processing. The density value is then compare with the baseline density, if you change more than 0.1, then the solution set aside.

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