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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