摘要
本文从教学角度出发，推导了行波法中跃变点反射的公式，给出了端点固定的反射的行波图象。
In this paper, the wave-neflection formula at a transition-point is derived,and the wave-propagation diagnams with the neflection at a starting-point are given. It is shown that they can easiey be accepted by students.
关键词
行波法
跃变点反射
端点反射
wave-propagation method, nefection at a starting-point,and neflection at a transition-point.
