New wind mixed with indoor polluted air, the pollutants are filled with the room, although concentrations are diluted, it is easily to create cross-infection.
新风与室内的污浊空气混合，污染物充斥整个房间，虽然浓度得到稀释，可容易造成交叉感染。
Therefore, quality of indoor air can not be evaluated only by organic compounds polluted in air, but by meteorological conditions.
因此，评价室内空气质量的好坏，不能仅仅考虑污染空气的有机化合物，还应考虑室内环境的气象条件。
How to improve the indoor air quality and how to prevent the indoor air from being polluted were explained.
系统阐述了改善室内空气质量及防治室内空气污染的方法。
Fresh air of natural ventilation comes directly from outdoor and cannot be re-polluted so it's effective to improve the indoor air quality.
自然通风直接来自室外，不会受到二次污染，对改善室内空气品质非常有效。
The utility model used as an indoor smoke gas filter appliance not only can protect the health of an indoor passive smoker, but also can keep the indoor air from being polluted.
本实用新型作为室内一种烟气过滤器具，不仅能够保护室内被动吸烟者身体健康，而且可保持室内空气不被污染。
The utility model used as an indoor smoke gas filter appliance not only can protect the health of an indoor passive smoker, but also can keep the indoor air from being polluted.
本实用新型作为室内一种烟气过滤器具，不仅能够保护室内被动吸烟者身体健康，而且可保持室内空气不被污染。
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