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简述了氯气等制冷工业中的化学气体的性质与检测方法。详细研究了 Ｗ Ｏ３ 系半导体氨敏材料及元件的敏感特性，对 Ｉｎ２ Ｏ３ 、 Ｓｎ Ｏ２ 等半导体氨敏材料也进行了探讨。
The properties and detection methods of chemical gases in refrigeration industry such as chlorine are briefly described. In this paper, the sensitive properties of W O3 semiconductor ammonia-sensitive materials and components are studied in detail. The semiconductor ammonia-sensitive materials such as In 2 O 3 and Sn O 2 are also discussed.