...价 密切值法[gap=338]Keywords： Mine ventilation system，Technical- economical effect，Evaluation，Osculating value method...
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Methods. Data was analyzed with osculating value method.
方法：运用密切值法进行统计分析。
The modified osculating value method is applied in the lake eutrophication.
将改进后的密切值法应用于湖泊富营养化评价中。
The osculating value method can change the multi index to the single comprehensive value.
将多指标转化为单一综合值，这是密切值法的最大功能。
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