negatively charged ion generator

例句：

1. 1. Thedevice is used to generate negatively charged ions for medical applications.
   该设备用于生成负电离子，用于医疗应用。
2. 2.The negative ion generator helps to purify the air in indoor spaces.
   负离子发生器有助于净化室内空间的空气。
3. 3. The negative ion generator is a popular choice for those seeking to improve their indoor air quality.
   负离子发生器是那些寻求改善室内空气质量的人们的热门选择。