This is a summery of the synthesis, structure and reaction of borazine.

对环硼氮烷的合成、反应进行了综述。

Starting from the summery, economic development foundation and incorporative development of Jing-jin-ji area, the paper makes 6 policies for the regional economic development of the area.

从京津冀地概况、经济基础以及联合容等方面入手,提出了京津冀域经济的6项对策。