虽然这些基于家庭调查资料的数据已经令人吃惊，但是在降低程度上可能还是保守数字。
Impressive though they are, these figures, based on household survey data, may understate the fall.
利用层次分析法确定各因素的权重，通过实际监测数据分析和相关的调查资料得出各因素的取值。
These factors' weight are determined by using analytic hierarchy process, and their values are obtained by analysis of monitoring data and related information of investigation.
利用统计数据，结合农户调查资料，对温县、浚县两个典型区域小麦生产和肥料施用状况进行了分析。
Wheat production and fertilizer application of Xun county and Wen county in typical area of Henan province were analyzed based on the statistical data and survey data from farmers.
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