The thermal conductivity of thin solid films is different form their bulk material's.
薄膜材料的热导率一般与其相应的块体材料有较大的差异。
The ratio of the thermal conductivity due to phonon-phonon interactions to the total thermal conductivity is about 33.0% in solid bulk nickel.
对于块体金属镍，由于声子-声子作用引起的热导率约占其总热导率的33.0%左右。
Correlation coefficients between the thermal conductivity and bulk density, open porosity, permeability and raw material grade was obtained respectively.
另外，还计算了导热系数与体积密度、显气孔率、透气度和原料等级之间的相关系数。
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