air relay

Developed a high-powder,efficient and practical air powder vacuum cleaner after studing its working principle in order to suck up air powder,the vacuum cleaner is vevy practical.

通過對吸塵器工作原理的學習,研究出一種大功率高效實用的空中粉塵吸塵器,用來吸掉空中的粉塵,這種吸塵器實用性很強。