换热器模型基于两相流分析，在动量、能量、质量三大守恒方程基础上引入一个反映两相之间相互关系的关系式以使方程可解。
The model of heat exchangers for room air conditioner are based on two phase flow analysis and an equation which reasonably reflects th…
这就得到两方程两未知数，这是可解的。
Now I have two equations with two unknowns and now I can solve.
本文介绍了非线性模拟电路故障分析的方法，并对故障方程的可解性问题进行了讨论。
In this paper a method for the fault analysis of nonlinear analog circuits is introduced and the solvability of the fault equation is also discussed.
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