Conclusions: The endotracheal tube without dead space significantly increases conventional ventilation efficiency in rabbits.
结论：无死腔气管插管可明显提高常规机械通气效率。
Measures the ventilation efficiency of the displacement ventilation systems for an office room, an assembly room and a gymnasium.
对办公室、会议室及体育馆置换通风系统的通风效率进行了实测。
Meanwhile, axial-flow fan has superiority in decreasing humidity, reducing ventilation cost and increasing ventilation efficiency and so on.
轴流风机通风降温在减少水分丢失、降低通风费用、提高通风效率等方面更能体现其优越性。
For improving the air quality, the concepts of age of air are introduced and the solutions of age of air and ventilation efficiency are obtained by using tracer gas concentration of…
为了提高客舱内空气品质，引入了空气龄的概念并给出了由客舱内典型点的示踪气体的浓度求空气龄及通风效率的方法。
Based on experimental data, puts forward a series of compound factors influencing ventilation effectiveness, and develops empirical formulas for predicting the ventilation efficiency.
根据大量的实验资料，分析提出了影响通风效率的若干复合因素，得出了预测置换通风效率的经验式。
Obtains a method for evaluating ventilation efficiency and air age after studying the ventilation course.
通过对通风过程的研究，得到了一个用于评价通风系统性能的通风效率和空气龄的方法。
Discusses correlations between ventilation effectiveness and air distribution, analyses why the ventilation efficiency of mixing ventilation is lower than that of displacement ventilation.
讨论了通风有效性与空气分布特性的相关性，分析了混合通风（上送下回）通风效率低于置换通风效率的原因。
Displacement ventilation is a completely new ventilation way, through which aims such as gaining higher air quality, economizing energy and getting better ventilation efficiency are realized.
置换通风是一种全新的通风方式，可获得较高的空气品质和节能效果以及具有较高的通风效率。
Displacement ventilation is a completely new ventilation way, through which aims such as gaining higher air quality, economizing energy and getting better ventilation efficiency are realized.
置换通风是一种全新的通风方式，可获得较高的空气品质和节能效果以及具有较高的通风效率。
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