urban air pollution concentration
urban air pollution concentration
城市空气污染浓度
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Monitoring of particulate matter concentration is the basis for urban air quality evaluation and pollution control, and also very important for health effects assessment.
颗粒物浓度监测不仅是评价城市空气质量的基础，而且是进行城市污染控制与环境健康效应评估的重要依据。
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