Two-dimensional(2D) barcode technology is an electronic tagging technology based on combination of computer and optical technology. It is an important way of in
On the basis of analyzing existing course system of urban planning discipline,this paper came up with a framework for optimization of urban planning personnel t
In order to develop natural antibacterial agents,the antibacterial activity of Aspergillusnigerxj was investigated.After being cultured in potato dextrose liqui
This paper summarizes and analyses the status quo of the sericultural standards system in China,and points out the characteristics and existed problems of seric