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What requirements should be met for the brightness measureme

What requirements should be met for the brightness measureme

Nowadays, with the development of economy and the acceleration of urbanization, the number of motor vehicles is increasing rapidly, which leads to increasingly serious traffic problems: traffic congestion or even congestion, frequent traffi...

Myth of traffic lights - is the pedestrian light button usef

Myth of traffic lights - is the pedestrian light button usef

Whenever we want to cross the road, we will first press the button on the post at the intersection, hoping that the traffic light will give the little green man indication as soon as possible. So for the past 24 years, you may have been was...

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