The mathematical principles and models of gray relational analysis and BP neural network used to determine the source of water were introduced.

给出了灰色关联分析及BP神经网络进行判别分析的数学原理和模型。

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Then the energy calculation and analysis for two normal run modes of the Water Source Heat Pump (WSHP) residential central air-conditioning were done at the concept of partial load characteristic.

并在考虑了水源热泵的部分负荷特性对机组效率的影响之后，对水源热泵住宅中央空调系统的两种常见工作模式进行了全年能耗计算与分析。

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In the analysis of the BOD5 of inlet water of Fuxian Lake, the source, ratio and pre-treatment of inoculums and the preparation method of inoculums diluting water were also studied.

在对抚仙湖入湖河流BOD5进行分析的过程中，对几种接种液的来源、配比、预处理及接种稀释水的配制方法进行了研究，并通过一系列的实验数据说明了这些配制方法的可行性。

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