During the evaluation, the weight of the factors and each hierarchy is decided by improved analytic hierarchy process (AHP), and the fuzzy operational criterion adopts weighted average method.

评估过程中以改进的层次分析法确定不同层次和因素的重要度，以加权平均方法为模糊运算准则。

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The apparatus proves stable by long-time operational testing. The product water accords with the criterion of purified water in the Chinese Pharmacopoeia 2000.

经长时间运行考核，该装置性能稳定，产水水质符合中国药典2000年版“纯化水”标准。

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The three operational modes, steady principle, and design criterion of key circuit parameters are presented.

深入分析研究了这类变换器的三种工作模式、稳态原理与关键电路参数设计准则。

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