The NADP home page offers data from a US network of 200 precipitationchemistry and atmospheric monitoring stations.
该网站提供了美国200多大气降水化学性质监测站的数据。
2
The characteristic of this technical process is higher recovery rate of cobalt and chromium, simpler technological route and lower cost, compared with the single chemistryprecipitation.
与单化学沉淀方法比，本工艺流程具有铬、钴的回收率高，工艺路线简单，可以节约成本的特点。
3
TiO_2 nanoparticles were prepared by chemistryprecipitation method and sol-gel method.