云幂能见度无限
ceiling and visibility unlimited
云幕能见度无限
ceiling and visibility unlimited
湿度-能见度指数
humidity-visibility index
大气能见度
visibility
atmospheric visibility
atmosphere visibility
meteorological visibility
大气水平能见度
atmospheric horizontal visibility
大气斜程能见度
Atmospheric slant visibility
灯光能见度弧度
arc of visibility of light