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介绍掺有３％Ｂｉ２Ｏ３的ＳｎＯ２超微粒膜的感湿特性。这种薄膜材料的阻湿特性曲线具有较好的线性，湿滞回差小，并有较好的重复性和长期稳定性．
Sensitivity characteristics of SnO2 ultrafine particles doped with 3% Bi2O3 are described. The moisture resistance characteristic curve of the film material has good linearity, small hysteresis of wet hysteresis, good repeatability and long-term stability.