简要介绍网络化灯光控制系统中的一些基本概念和原理，阐述实际工作中所面临的问题。

A brief introduction about some basic concepts and principles for lamplight controlling system through network was presented. Meanwhile, some question marks from real case were expounded as well.

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夜晚，原理城市灯光，拍摄满月天空下的雪景。

Night, away from city lights, snowscape under full moon.

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介绍了一种基于透射表原理的可见激光测量气象能见度和灯光能见度的仪器。

This paper presents a kind of measurement instrument for meteorological visibility and lighting visibility using visible laser.

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