The world's smallest generator comes out

Beijing, April 13th, Professor Wang Zhonglin of the Georgia Institute of Technology in the United States reported in the April 14 issue of Science that they successfully converted mechanical energy into electrical energy in the nanometer scale, and developed the world's smallest Generator - nan

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Orchard soil fertilization technology

Organic fertilizers and most inorganic fertilizers (fertilizers) should be applied below the surface of the soil, which is conducive to the absorption of roots, robust trees, and can reduce the loss of fertilizer. First, the whole garden fertilization First spread the fertilizer in the whole g

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