The Speed Limit Maintenance Of Deep Groove Ball Bearings

The Speed Limit Maintenance Of Deep Groove Ball Bearings

If the limit speed and speed of the selected deep groove ball bearings cannot meet the requirements for use, some technical improvement measures can be adopted to increase...
New strategy: use silver nanopowder to eliminate bacteria on computer keyboards

New strategy: use silver nanopowder to eliminate bacteria on computer keyboards

The Internet has brought great convenience to my body. When we enjoy the high efficiency it brings, we ignore its health problems. There are a lot of bacteria on computer ...