文章结合大家熟练掌握的计算机知识，介绍了可选性曲线的又一种简单画法。
The paper presents a simple method for plotting the washability curve with help of computer knowledge.
思维导图的画法就像1-2-3一样简单
总结了根据外力的符号直接绘制内力图的简单实用的绘制方法，这种画法简化了绘制过程，提高了绘图速度；
With the summary of simplified and practical designing approaches to draw internal force figures in accordance with notations in internal forces, which simplified drawing process and improved speed.
应用推荐