contact voltage的用法和樣例：
例句
- The nodal voltage method is one of commonly used methods in electric circuit analysis.
摘要結點電壓法是分析電路的常用方法之一。 - This article introduces various conditions when listing out nodal voltage equations by a circuit diagram.Then it makes a summarization.
通過電阻電路圖介紹了列寫結點電壓方程時會出現的各種情況，並進行了歸納總結。
