external excitation

• 外部激发

external excitation的用法和样例：

例句

1. The atoms are excited by being irradiated with energy from an external source.
   原子受到外部能源的照射而激发。
2. At room temperature, thermal excitation can produce an unwanted current.
   在温室下，热激发可能产生所不需要的电流。