The intelligent barrier system is a channel entrance and exit management device that is specially used to restrict the driving of motor vehicles on roads. It is now widely used at the entrance of highway toll stations, parking lots, communities, and enterprises to manage the a…

Tiemu has obvious rhythm, with a peak of three growths a year. From late October to January, the peak of growth, the growth of tree height accounts for 60.3% of the whole year, and the breast diameter is …

Beidou satellite navigation system is a global satellite positioning and communication system developed by China. With the acceleration of the construction of Beidou navigation system, in order to promote the overall improvement of Beidou navigation product quality and ensure the safety of …

At present, the problem of pesticide residues in fruits and vegetables makes people feel overwhelmed when using fruits and vegetables. Therefore, reducing the number of pesticide sprays is an important method to reduce pesticide residues. But at the same time, w…