Sanitary garbage trucks are mainly used for municipal sanitation and large-scale factories and mines to transport all kinds of garbage, especially for the transportation of residen...

After the battery in the solar panel passes through the PN junction, if the semiconductor flows, the resistance is very large, and the loss is very large.

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The solar panel is composed of silicon atoms. You can think of atoms as bricks on buildings-just like Lego's building blocks, but because atoms are so small, you need special tools...

On the morning of May 20, Yingjisha County Party Committee Vice Secretary, Jining Aid Xinjiang Command Comrade Sun Xizhong and his entourage visited Shandong Lvbei

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