At present, the prevention and control of the new coronavirus pneumonia is still in a severe period, and the supporting role played by scientific and technological forces in epidemic prevention and control has received more and more attention, such as big data visualization, intelligent temperature measurement robots, telemedicine, etc. The high technology commonly used in […]

1. Emergency lights are lights that continue to work when the normal lighting system no longer provides normal lighting due to power failure. Each light of emergency lights has a large number of electronic components, such as transformers, voltage stabilizers, charging, inverters, batteries, etc. Emergency lights need to be charged and discharged during use, maintenance […]

The emergence of lawn mowers saves the work time of weeding workers and reduces a lot of human resources. In countries with high development of animal husbandry mechanization, the research on new lawn mowers is developing in the direction of high speed and energy saving. The lawn mower is characterized by flat work and simple […]

In recent years, due to the increasing contradiction between population and land, the utilization rate of soil has become higher and higher. Long-term use of excessive chemicals and unreasonable soil management have weakened carbon sequestration potential, more than 50% of soils have been degraded, and current agricultural production models can no longer guarantee the health […]