quality

Moreover, the limit metric property of roots of.

此外，本文还讨论了一类刀ｘ￣ｎη（ｘ）＝ξ（ｘ）的根的极限度量性质。

A survey is made of the quality of purified water used in the in the Acid Rain Monitoring Network of China Meteorological Administration(CMA) based on the station reports from 2006 to 2008.

2005年中国气象局下发的《酸雨观测业务规范》对各酸雨观测站的纯水质量提出了明确要求,从2006年起,年度酸雨观测业务质量考核中增加对纯水电导率(K值)的考核内容。