结果：无赤光像反差为0.87时影像边缘效应、视觉清晰度最佳，灰雾为第二位。
Results: the best imagine edge effect and visual sense definition for red free light picture contrast is 0.87. Grey brume is the second important parameter.
结果：无赤光像反差为0.87时影像边缘效应、视觉清晰度最佳，灰雾为第二位。
Results: the best imagine edge effect and visual sense definition for red free light picture contrast is 0.87. Grey brume is the second important parameter.
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