Based on the obtained results, a pollution rate econometric model of the city water supply increasing caused by dust was presented, which has been used for the study of Xi 'an water supply system.
在此基础上，利用该模型对西安市降尘污染引起的城市供水增加比例进行了模拟分析。
2
It can design, devise, install stabilize function and practical econometric combine nets and independent solar Vanquish electric power generation system project that for customers.
并能为客户设计、策划、安装性能稳定经济实用的并网型和独立型太阳能光伏发电系统工程。
3
The new mineral tax system and the econometric model should be further proofed, tested and improved.