It has been a obstructor in application being the high resistivity at room temperature, the feeble PTC intensity and the poor reproducibility in our country.

 
  • 我国在该领域的研究开发起步较晚,存在室温体积电阻率高、PTC强度低和热循环稳定性差等问题,成为制约其走向实用化的瓶颈。
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