通过对玛纳斯河15年来的水质监测资料的分析、研究，从中寻找出该流域的地表及地下水质变化规律与发展趋势。
By analyzing 15 years data about water quality to find the varying tendency of surface water and groundwater in Manasi river valley.
俄语的分析化发展趋势是语言内外因素共同作用的结果，与使用者认知心理的变化、语言演变的经济原则和语言接触等因素有关。
The trend can be attributed to both exterior and interior factors, like the users cognition and psychology, principle of economy, language change and language contact.
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