我触碰了错误的管脚，从而导致了电流的反转，结果那块电路板上的所有二极管都被烧坏了。
I touched the wrong pins causing a current reversal and all of the diodes on the circuit board exploded.
灰尘还会使电子元器件、电路板和散热器经常超负荷工作，最终招致耗电量增加，以至会烧坏电子元件，惹起火灾。
Dust also makes electronic components, circuit boards and heat sink are often overloaded, resulting in increased power consumption, and even burn out electronic components, causing a fire.
在安装时，不慎金属掉在产品电路板上，没有绝缘层导致电路短路，易烧坏产品；
When installs, If the metal falls on the product circuit wafer, because have not the insulating layer to cause the electric circuit to short-circuit, easy to burn out the product;
在安装时，不慎金属掉在产品电路板上，没有绝缘层导致电路短路，易烧坏产品；
When installs, If the metal falls on the product circuit wafer, because have not the insulating layer to cause the electric circuit to short-circuit, easy to burn out the product;
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