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介绍了化学沉淀法制备TiO2粉体的方法，通过掺入高价金属离子变成半导体陶瓷，制成湿敏元件．运用表面修饰技术，对元件进行改性，提高湿敏元件的稳定性．
A method for preparing TiO2 powder by chemical precipitation is introduced, and the humidity element is made by incorporating high-valent metal ions into the semiconductor ceramic. Surface modification techniques are used to modify the elements to improve the stability of the humidity elements.