The influence on the character of PTCR materials with different doping method was studied.
研究了不同掺杂方式对PTCR材料电学性能的影响。
The preparation and doping method influences the electrical properties of barium titanate strongly.
钛酸钡粉体的制备方法及掺杂方式对陶瓷的电学性质有很大影响。
It is proved that doping is the cheapest and practical way to introduce pinning centers. In this paper, we use doping method.
实践证明，在改善材料内部组分与结构方面所采用的多种方法中，掺杂是引进有效钉扎中心既廉价又实用的方法。
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