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本刊1984年第4期中《顺序开、停车的控制线路》一文发表后,陆续收到一些读者来信、来稿,对该文所提供的控制线路提出了不同看法和改进意见。现选登部分读者和原作者文章三篇,以结束对这一问题的讨论.
After the publication of the article “Control Circuits for Sequential Start-up and Stopping” in the 4th issue of 1984, a number of readers’ letters and contributions were received one after another. Different views and suggestions for improvement were provided for the control lines provided by this article. I have selected three articles for readers and original authors to end the discussion on this issue.