触点熔焊是汽车继电器最为严重的故障，它可能导致汽车事故。
Contact welding of automotive relay is the worst failure and may result in serious car accident.
有SF 6气体密度继电器，并能事故报警，及闭锁操作机构。
It shall have SF6 gas density relay and emergency alarm as well as blocking operating mechanism.
常见的电梯门锁安全电路中，门锁继电器在多种情况下都可能产生误动作，存在事故隐患。
Based on discussion on several common elevator door lock circuits with software, this paper points out some hidden peril of the accident in such circuits, and designs a circuit using PLC.
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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