At last, the article expatiate the process of the fuzzy control arithmetic realized on the PLC.
最后，阐述了模糊控制算法在PLC上实现的过程。
This article expatiate the necessity of Information Retrieval Class and discourse on authors attitude about the setting of devised course and teaching content.
本文论述了建立文献检索课课程体系的必要性，并就其课程设计及教学内容的设置谈了具体看法。
This article expatiate the reasons and influence of the short circuit, and introduces common methods about how to limit short circuit current in several typical power substations.
本文阐述了短路电流产生的原因及其后果，同时介绍几种变电所及电站中限制短路电流的常用方法。
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