The thermal conductivities and thermal diffusivities of the material must be known . 必須知道各種材料的熱導(dǎo)率和熱擴(kuò)散率。
These kinds of measurements are necessary for determinations of thermal diffusivities from the thermal conductivity and densities . 根據(jù)熱導(dǎo)率和密度確定熱擴(kuò)散率必須進(jìn)行這種測(cè)量。
Correlations of diffusivities for gases 氣體擴(kuò)散率的關(guān)系式
A simple method for determining pore and surface diffusivities in porous adsorbent 一種確定煤基吸附劑內(nèi)各擴(kuò)散系數(shù)的簡(jiǎn)易方法