ciw

In 1999, CIW became the first to publish regional special editions, which covered five big regions in China.

1999年，第一个出版覆盖全国5个大区的《地方专刊》。

In 1998, CIW turned into a semiweekly publication.

1998年, 开始一周双刊.

Strengthening cooperation with commercial stations; fully using domestic news net stations in CIW;

加强与商业网站的交流与合作，充分发挥国内新闻网站在高校思想政治工作中的重要作用；

REE and trace element data supported the conclusion further. The chemical index of weathering ( CIW) as well as TiO 2 and Al 2 O 3 concentrations reflected a more intense weathering in the provenances of the shales in north part.

北部页岩明显偏高的TiO2和Al2O3含量以及化学风化指数（CIW）表明北部沉积物的源区经历了更强烈的风化作用。