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介绍一种由反性气敏元件对构成的气体传感器．它具有，既能提高灵敏度和选择性，又可平抑温、湿波动引起干扰的能力
A gas sensor consisting of an anti-gas sensor pair is introduced. It has, both to improve the sensitivity and selectivity, but also smooth the temperature and humidity fluctuations caused by interference ability