Introduce magnetic material in OLED, will make brightness gets controlling, and need not add electric contact.

把磁性材料引入OLED之中, 将使亮度获得节制, 而不必附加电接触.

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Usually, electric contact pressure gauge matches with relevant electrical apparatus, for instance, relay and contactor.

电接点压力表通常与相应的电气器件(如继电器及接触器)配套使用.

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