本文对已有的热导率与多层层密度之间的半经验公式:λ=a’N2+b’/N进行了分析,指出公式的解释与事实不符,完全忽略了层间残余气体的影响。为此,作者从理论上进行了推导,建立了一个新的半经验公式:λ=a’N2+b’/N＋F(P’p)[2N破/(1-Nt1-Nt2)]2。并用实验检验了这个新的半经验公式,发现它比已有的半经验公式更符合实际。图3,表3,参考文献11。 This paper analyzes the existing semi-empirical formula between thermal conductivity and multi-layer density: λ = a’N2 + b ’/ N, and points out that the explanation of the formula is not in accordance with the facts, completely ignoring the intermetallic residual gas influences. For this reason, the author deduces theoretically and establishes a new semi-empirical formula: λ = a’N2 + b ’/ N + F (P’p) [2N broken / (1-Nt1-Nt2)] 2. Experiments with this new semi-empirical formula and found that it is more realistic than the existing semi-empirical formula. Figure 3, Table 3, Reference 11.