A preliminary study on the design of night lighting in …

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Zhengzhou City Nightscape Lighting Design Xing Yan Chen Yuxing Deng Chao 2 (Pingdingshan Institute of Technology, Henan Pingdingshan 467001; 2. Pingdingshan City Highway Bureau, Henan Pingdingshan 467000) The study of the problem, proposed the design principles and procedures of urban ...

Research on High Power LED Packaging Technology and Dri…

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-23-Aging of the phosphor may also cause the solder of the flip-chip solder to melt and the chip to fail. Moreover, when the temperature rises, the LED chromaticity deteriorates. This is because as the temperature rises, the luminescence peak of the blue light shifts toward the long wa ...

The custom of street lamps in Sixi Sibao

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◎Liu Yonghua's street lamp custom in the West Sibao When discussing the public welfare undertakings in the Ming and Qing Dynasties, it is easy to think of the concepts of “public domain” and “civil society” in European history. The two most famous exam ...

WeChat fans have more than 5W! Senior engineer is busy …

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[Text / Gaogong LED Yue Mengdi] "When you read your WeChat, you know that TW has such a big trouble. Fortunately, we didn't cooperate with them before they cleared the money." In an LED company in Shiyan, Shenzhen, The general manager of the company told the author that the author was ...

How to set the distribution system protection device of…

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1 The fact that the harmonics of the distribution system of the frequency converter cause the protection device to trip incorrectly Case 1 When Chengdu International Shuangliu Airport was rebuilt at the airport, more than 100 sets of thyristor inverters of more than 75 kW wer ...

Ansonmei Auto Air Conditioner Automatic Control Program…

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Air conditioning is an indispensable configuration for meeting the comfort requirements of the car. It is used for interior cooling, heating, ventilation, and a comfortable driving environment is also related to driving safety. The automatic air conditioner is more convenient ...

LeTV how to watch TV live, free on-demand tutorial

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Letv 919 audience straight down 500 yuan, 40-inch super TV down to 1579 yuan, 919 full sell more than 382,000 super TV, Super TV can go home after buying live, on demand it? Because Super TV is very cheap, but it is bound to be a LeTV member, and this member is only watchin ...