plus ion的用法和樣例：
例句
- If one or more electrons are removed, the remaining positively charged structure is called a positive ion.
如果移去一個或多個電子，剩下來帶正電荷的結構就稱為正離子。 - The experimentally measured temperature dependence of retrograde velocity of vacuum arcs can be explained by the ion jet model for retrograde motion of vacuum arcs.
實驗測得的后退速度的溫度關系可用真空電弧后退運動的正離子噴流模型加以解釋。
