internal-conversion source

例句：

1. 1. Thedevice uses an internal conversion source to convert light into electricity.
   该设备使用内部转换源将光转换为电能。
2. 2. The company's internal conversion source is a key factor in its success.
   该公司的内部转换源是其成功的关键因素。
3. 3. The research team discovered a new internal conversion source that could potentially improve energy efficiency.
   研究团队发现了一种新的内部转换源，有望提高能源效率。