Secret of the sky, light snow screen!
暗暗的天空, 淡淡的雪幕!
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Heat insulated ceiling, sky light.
反光隔热, 天然采光.
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Sky - light spectra with different azimythal and different obliquity were measured and analyzed in Chengdu area.
本文报道成都地区天空光光谱的测量与分析.
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LLL night vision system depends on the night sky light illumination conditions, i.
目前的微光夜视系统靠夜天光照射景物, 以被动的方式工作,自身的隐蔽性好.
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