为了更好的控制室内空气环境，必须对室内空气流速、温度、有害物浓度的分布有一定的了解。
It is necessary to get sufficient knowledge of the indoor air velocity distribution, temperature distribution, and pollutant concentration distribution.
在其合理组织室内空气流动、使空气温湿度、流速等能更好的满足人们的舒适感觉的同时，其下送风口的气流再生噪声问题也备受关注。
It not only can indoor air flow organized rationally, but also can air temperature and humidity, flow rate satisfied. What's more, the noise control should also be concerned about.
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