电气设备热故障会导致绝缘下降并击穿，使设备损坏，甚至引起火灾。
The heat fault of the electric equipment can cause insulation down and breakdown and makes the equipment damage, even gives rise to fires.
在医院这种特殊的使用场合，频繁的装拆、清洗，特别是反复的高温、高压水蒸气消毒是造成电气绝缘下降的主要原因。
Because of frequent setup and disassembly, cleaning and autoclaving steam sterilization, the steam is infiltrated into the ultrasonic handpiece, resulting in failure of electric insulation.
在气体慢积累模式中，可能由于轻微过在，绝缘油分解产生的气体在继电器的顶部聚集，迫使油位下降。
On a slow accumulation of gas, due perhaps to slight overload, gas produced by decomposition of insulating oil accumulates in the top of the relay and forces the oil level down.
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