许多家庭在灯具和燃料上的支出占到其收入的30%之多，而这些只为了再每晚能够有两到三个小时的亮光。
Some households spend as much as 30 percent of their income on lamps and fuel — this for two or three hours of poor quality light at night.
该法案大到宏观视野，小到照明灯具的技术规格等细节，都一揽无余。
It ranges from grand vision to minuscule details such as technical specifications on lighting fixtures.
本文以教室智能灯具开关为例，从系统数学模型的建立、基本系统结构到系统硬件设计给以详述。
This paper, taking Classroom Intelligent Switch for example , discussed the mathematical model of system structure and the design of hardware and software.
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