positive temperature coefficient
... positive resist 正电阻，正阻 positive temperature coefficient (PTC) 正向温度系数 positive-edge （脉冲) 正沿，上升沿 ...
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结果表明，晶闸管正向压降随温度升高而降低，从而引起变流装置的均流系数随温度升高而升高。
The results show that the forward conduction voltage drop reduces while the temperature increases and the current balance coefficients of converter in creases with temperature rising.
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