本文介绍的是一种以高分子聚合物为主体材料的新型湿敏电阻元件，并对其工作原理、特点、技术参数、应用电路及制作方法作了具体阐述。
A new type humidity sensitive resistor of which main material is high-polymer film is presented in details by its principle of operation, performance, applied circuit and manufacture process.
程控电话交换机过电流保护元件要求用低电阻率高性能的PT C陶瓷材料来制备。
High performance PTC ceramic material with low resistivity is desired to prepare an over-current limiter for program-controlled telephone exchanger.
以它为基体材料制备乙醇气敏元件，对其电阻随乙醇气浓度变化的特性进行了讨论。
It is also discussed that the characteristics of the change of resistance of the ethanol gas sensor based on this material with the change of the concentration of the ethanol gas.
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