我用绿色的粉笔画出这个，总压强,如果你把这两个直线加起来，就会得到另一条直线。

Let me do it in blue. The total pressure if you add up these two straight lines together, you got another straight line.

youdao

我用绿色的粉笔画出这个，总压强,如果你把这两个直线加起来，就会得到另一条直线。

Let me do it in blue. The total pressure if you add up these two straight lines together, you got another straight line.

youdao