telegrapher's equation

例句：

1. 1. The telegrapher'sequation is a mathematical model used to predictthe behavior of communication systems.
   电报方程是一种数学模型，用于预测通信系统的行为。
2. 2. Inthis equation, x represents the distance betweentwo points on a line.
   在这个方程中，x代表线段上两点之间的距离。
3. 3. Thesolution to the equation can be found bysubstituting the values of x andy into the equation.
   方程的解可以通过将x和y的值代入方程中得到。