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导热系数λ和导温系数α是物质的重要热物理性质。热物性学的现代理论,对于了解热传导过程的机理虽颇有帮助,但由于理论尚欠完善,热物理性质基本上仍然由实验方法确定。
Thermal conductivity λ and thermal conductivity coefficient α are important thermophysical properties of matter. The modern theory of thermophysical properties is quite helpful in understanding the mechanism of heat conduction. However, due to the incomplete theory, the thermophysical properties are still basically determined by experimental methods.