Ultrasound is widely used in machinery manufacturing, chemical, metallurgy, medical, light industry, agriculture and power engineering. Among them, ultrasonic cleaning is one of the most important uses. It is based on cavitation, that is, the rapid formation of numerous bubbles in the clean.......
In 2015, we said, "The world is so big, I want to go and see it." In 2015, we said under the dome, "I want fresh air." These people in 2015 evoke our countless resonances, and they have ac.......