The measurement chamber must been kept with low vacuum in measuring for that gas convection affecting thermal conductivity is reduced.
为了减少气体对流对传热的影响，测量必须在低气压下进行，然后通过线性外推求算结果。
The measurement chamber must been kept with low vacuum in measuring for that gas convection affecting thermal conductivity is reduced.
为了减少气体对流对传热的影响，测量必须在低气压下进行，然后通过线性外推求算结果。
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