First we get the relation between slope and temperature from regression way, and get the slope of beeline according to any temperature, then get the coordinate of convergent point.
先拟和出斜率和温度的关系，求出任意温度对应的直线的斜率，再求出汇聚点的坐标。
参考来源 - 双极结型晶体管发射结正向I·2,447,543篇论文数据，部分数据来源于NoteExpress
The Pearl river Delta is the convergent point of three upstream rivers: the East river, North river, and West river.
珠江三角洲是三股河流的汇聚点，它们是：东江、北江和西江。
A general equation was derived for calculating the coordinates of the convergent point. The physical meaning of the coordinates was discussed from the point of view of thermodynamics.
建立了溶质平均收敛点坐标的计算方程，并从自由能变的角度表征了收敛点坐标的物理意义，阐明了收敛点的纵坐标相等的原因是溶质在收敛点处的自由能变为零。
In this way, we not only know the slope of the beeline, but also know that this beeline comes by the convergent point, so the I-V characteristic curve corresponding to any temperature can be drawn.
这样，既知道直线的斜率，又知道这条直线经过汇聚点，任意温度对应的I - V特性曲线都可以做出来。
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