它克服了现有火车通风装置换气量小的缺点，改善了列车内部的温度和空气环境。
The utility model overcomes the shortcoming that the ventilation volume of the ventilator of the existing train is small, and the temperature and air environment in the train can be improved.
换气功能对去除挥发性有机化合物（TVOC）有效，去除效果与换气量成正比；
The air exchange function has certain effect on Total Volatile Organic Compound(TVOC), and the effect is in direct proportion to the air flow volume.
确定了适合于住宅有组织通风系统的通风换气量、启动浓度以及机外余压等有组织通风主要参数。
We select several forms of air distribution methods and ventilation ducts which suitable for the residential organized ventilation system with heat recovery, and identify the ventilation duct laying;
为防止潮湿和有害气体的增加，在塑料棚上方前檐下设换气窗，使舍内形成通过换气量可以控制温热状态的小气候。
In order to prevent the increase of damp and harmful gases, a window was designed under the front eaves of the plastic shed, so that the microclimate of the room can be controlled.
目的以心输出量和肺换气功能为指标研究低潮气量通气对瓣膜置换病人心肺功能的影响。
Objective To investigate the effects of low tidal volume ventilation on pulmonary and cardiac function before and after mitral valve replacement.
目的以心输出量和肺换气功能为指标研究低潮气量通气对瓣膜置换病人心肺功能的影响。
Objective To investigate the effects of low tidal volume ventilation on pulmonary and cardiac function before and after mitral valve replacement.
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