The oil flowing relay is the important prot of the cooling system of power transformer.
油流继电器是大型电力变压器冷却循环系统的重要部件。
The reliability lab ship fuel oil donkey boiler controlled by relay control system is evaluated using counting method, and mean time to failure (MTTF) of the control circuit is educed.
对采用继电器控制系统进行控制的某实验室船舶燃油辅助锅炉，采用计数法进行可靠性评估，得出控制电路的平均无故障时间。
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