photoelectric dust meter

例句：

1. 1. The photoelectric dust meter is used to measure the amount of dust in the air.
   光电粉尘仪用于测量空气中的粉尘量。
2. 2.The photoelectric dust meter is an essential tool for maintaining cleanliness in industrial environments.
   光电粉尘仪是工业环境中保持清洁的关键工具。
3. 3. The photoelectric dust meter can detect small particles and particles that are too small to be seen with the naked eye.
   光电粉尘仪可以检测到肉眼无法看到的微小颗粒和微粒。