The improvement of the PTC characteristics was induced by the more oxide of the grain boundary of the refiner particle size and an increase of the Barium vacancy.
在高温下，由于钡空位的增加、晶粒较细晶界较多和晶界的氧化作用等增加了材料的PTC效应。
The improvement of the PTC characteristics was induced by the more oxide of the grain boundary of the refiner particle size and an increase of the Barium vacancy.
在高温下，由于钡空位的增加、晶粒较细晶界较多和晶界的氧化作用等增加了材料的PTC效应。
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