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编辑同志: 《低压电器技术情报》1975年第6期中“关于单线远距离控制电动机方法的改进”一文很好。如果线路中的电压表改以低压试电笔用
Editing comrades: The article “On Improvement of Single-line Remote Control of Motors” in “Voltage Electrical Apparatus Technical Information” No. 6 of 1975 is very good. If the voltage meter in the line is changed to a low-voltage test pencil