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介绍了部分几何形状未知的热传导反问题．推导出双层、二维圆柱（内表面温度一定的反问题解法．简述了其初步数值试验结果，为“红外计算机辅助透视”这项高新技术提供了理论依据．
Some problems of heat conduction with unknown geometry are introduced. The double-layer and two-dimensional cylinders are deduced (the inverse problem of the inner surface temperature is solved. The preliminary numerical results are briefly described, which provides a theoretical basis for the “infrared computer-assisted fluoroscopy” technology.