Since1995, Beijing Science and Technology Week has been held13 times as a large public science popularization activity.

北京科技周作为一项大型公益性科普活动，自1995年举办以来，今年已经是第13届了。

youdao

So, this dissertation defines it using the characteristics of large science popularization activity, so as to set base for the following study.

因此，本文从大型科普活动的特点出发界定了这个重要的概念，为后文的研究奠定重要的基础。

youdao

So, this dissertation defines it using the characteristics of large science popularization activity, so as to set base for the following study.

因此，本文从大型科普活动的特点出发界定了这个重要的概念，为后文的研究奠定重要的基础。

youdao