With the continuous development of science, technology and productivity, power electronic equipment plays an increasingly important role in our lives...
1. Lubrication The hydrophilic group in the superplasticizer has solid polarity, so the adsorption film of the water-reducing representative externally of...
With the continuous development of science, technology and productivity, power electronic equipment plays an increasingly important role in our lives and work. Among them, the BTW69 thyristor, a key power electronic device, has a wide range of applications and excellent performance. However, thyristors may still...
1. Lubrication The hydrophilic group in the superplasticizer has solid polarity, so the adsorption film of the water-reducing representative externally of the concrete particles can form a stable solvated water film with water molecules. This water film has good lubrication effect and can effectively decrease the...