listed;listing

Data of listed companies listing in 1997 from 1998 to 2007 are chosen to study the determinants of board structure feature of Chinese listed companies , which enable us to measure the evolution of corporate boards as firms mature .

选取1997年上市的上市公司从1998到2007年数据，研究中国上市公司董事会结构特征的决定因素，十年期的样本允许我们衡量随着公司不断成熟，其董事会结构特征的变化情况。

This is because our country has lots of small and medium-sized enterprises , especially exist many just listed and future listing of emerging enterprises and growth of SMES .

这是因为我国具有大量中小企业，特别是存在许多刚上市及未来将上市的新兴企业和成长型中小企业。

Economic environment changes , but the country still has not changed the relevant legal system , such as three consecutive losses of listed companies to stop listing .

经济环境巨变，但是我国相关法律制度依旧没变，如上市公司连续亏损三年，停止上市；2007年税制改革，递延税款会发生了巨大的变动。