不稳定导热 meaning in English

unsteady heat conduction

In the thesis , two dimensional non - stable conductivity is researched in detail , with the consideration of the influence of variable capacity . we established model of temperature computation in use of difference
文中主要研究了二维不稳定导热，并考虑变物性的影响，利用差分方法进行数值计算，建立了温度计算的数学模型。
Combining the unstable heat conduction in crystal layer with heat transfer of undeveloped slug flow in a vertical tube , a time - progression model of crystal layer growth in the bubble column crystallizer pipe is proposed , the calculation results from the numerical method agree well with the experimental data . under certain operating conditions , the periodical arrival of gas plugs can cause crystallization and partial re - melting occur in the crystal - melt interface
结合未充分发展弹状流的传递特征和晶层内不稳定导热，提出了鼓泡塔结晶器管内晶层生长的时间级联模型,与实验值吻合良好.特定操作条件下，随弹状泡的到来和离去，结晶界面可发生结晶-部分重熔