From practice of engineering, LED characteristic of light source, its development trend and using LED in lighting engineering are introduced, and fixing attention are also discussed.
本文通过工程实际阐述LED光源特点、发展趋势以及LED在照明工程中的应用和LED照明产品在工程安装中应注意的事项。
Objective: in order to meet medical practical needs for local lighting during medical procedures, a medical headlamp was designed and made popularized in clinical practice.
目的：为了满足医护人员在医疗工作中进行局部照明的实际需要，自行设计了一种医用头灯，并使其能够在临床中得到普及和广泛应用。
All the practice shows, the measures can protect the architecture and equipment of the cement plant from damage of lighting strike.
实践证明，这些措施可有效保护水泥厂的建筑结构和设备遭受雷击破坏。
All the practice shows, the measures can protect the architecture and equipment of the cement plant from damage of lighting strike.
实践证明，这些措施可有效保护水泥厂的建筑结构和设备遭受雷击破坏。
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