Has on-airindicator and an output level volume control.
有在-之上空气的指示器和输出水平体积控制。
2
PM10 is an important indicator of urban air pollution, and the health risks associated with the complex mixtures of pollutants typically found in cities.
PM 10是城市空气污染以及在城市中通常发现的与污染物的复杂混合物相关健康风险的一项重要指标。
3
At present, Indoor Air Pollution has become the social hot spot. Total Volatile Organic Compounds (TVOC) is an important indicator of Indoor Air Quality (IAQ).