故障在线诊断的关键问题在于只用一次测试结果能定位故障。

The key to fault diagnosis on line is that the fault may be located after only one test have be done.

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为了能及时发现列车轴承故障诊断，保证行车安全，故障在线诊断的研究显得尤为重要。

For the sake of discovering the malfunction of train's bearing in time and to guarantee the security of the train, the research of on-line malfunction diagnosis become especially important.

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本文介绍了一种基于专家系统的水泥生产在线故障诊断系统，阐述了系统的构成、主要功能和实现方法。

This paper introduces an on-line fault diagnosis system that based on expert system in cement production, and discusses its composition, main function and implementation method.

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