通过煤矿井下防爆电气故障引发事故的列举，阐述了井下防爆电气故障产生的主要原因，并对其进行了较详细的分析。
The author enumerates the accidents happened in coal mine caused by electrical malfunction of explosion protected equipments and analyses the main causes of these electrical malfunctions.
在分析和设计继电器-接触器控制电路时，往往忽视临界竞争现象，结果造成电气控制达不到预期目的，甚至造成事故。
In the practice of analyzing and designing of relay-contactor circuits, the critical-competition phenomenon is usually ignored, causing failures in reaching the intended purpose or even damages.
在分析和设计继电器-接触器控制电路时，往往忽视临界竞争现象，结果造成电气控制达不到预期目的，甚至造成事故。
In the practice of analyzing and designing of relay-contactor circuits, the critical-competition phenomenon is usually ignored, causing failures in reaching the intended purpose or even damages.
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