The annual spring grass is green, and it is the Qingming Festival. The Qingming Festival in 2023 is approaching. In order to vigorously promote the traditional virtues of the Chinese nation, deeply promote the transformation of funeral customs, and actively cultivate a civilized, green, simple, and
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2022-06
The main indicators affecting the performance of insulating materials are as follows:1. Insulation resistance and resistivityResistance is the reciprocal of conductance, and resistivity is the resistance per unit volume. The smaller the conductivity of the material, the greater the resistance. The r
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2022-02
The Spring Festival is the beginning of the year and the traditional festival. It is commonly known as new year, new year, new year’s day and so on. The Spring Festival has a long history, which evolved from the worship of praying for new year in ancient times. All things are based on heaven and peo
