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来源：雅诚德英语网
Among clear air, cloudy sky and overcast sky, the maximum of reflective ratio within visible and near infrared tunnels appears in overcast sky.
碧空、昙天、阴天中，可见光与近红外通道的反射率，均是以阴天为最大；
Among clear air, cloudy sky and overcast sky, the maximum of reflective ratio within visible and near infrared tunnels appears in overcast sky.
碧空、昙天、阴天中，可见光与近红外通道的反射率，均是以阴天为最大；