However the changes of media enviroment caused by social transfomation directly influences and extends the communication forms and funtion of mass media.
在昆曲文化历史时期的传承和传播中，大众媒介发挥了关键性的作用。
2
In this study, VP7 gene and CTB-VP7 fusion gene expression vectors were constructed, and a high-efficient genetic transfomation system of carrot(Daucus carota L. )