讨论了换气次数的正确选取方法。
Especially discusses the ways of choosing a proper air change rate.
结论室内综合换气次数可以科学地反映室内空气质量。
Conclusion Synthetic air exchange frequency may objectively reflect the in...
分析了乱流洁净室净化空调设计中室内发尘量和新风比对换气次数的影响。
Analyzes the effects of indoor dust loading and of fresh air rate to the air change rate in turbulent flow clean rooms.
酒店旧厨房空调换气系统的设计方法存在问题，而导致换气次数高、热能消耗过大。
The existing problem in conventional design method for ventilation system in hotel kitchen resulted in high ventilation ratio and large heat energy consumption.
针对孔板送风的乱流洁净室，运用C FD软件对不同换气次数条件下的气流组织和污染物扩散进行数值模拟分析。
This paper analyzes and simulates the effect of the air change rate per hour (ACH) on contamination diffusion airflow field in turbulent clean-room of hole-board ventilation by using CFD.
研究了围护结构性能改进、体形系数变化及换气次数增加等因素对建筑全年空调、供暖能耗相对变化率的影响规律。
Studies the influence of the reform of envelope construction, variation of shape coefficient and increase of ventilation rate on t…
最后对实验数据进行了分析，发现地铁站内在日常运营时存在自然通风进出地铁站的现象，且计算出的换气次数能够满足地铁站人员所需的最低新风量要求。
Lastly, analyze the measured data, found that natural wind flow into and out the metro station within the daily operation period which could satisfy the lowest fresh air requirement.
你可以使用象3-2-3 - 2模式…，这个次数是指两次换气之间的划臂次数。
You could use a pattern like 3-2-3-2... the Numbers being the number of strokes between breaths.
你可以使用象3-2-3 - 2模式…，这个次数是指两次换气之间的划臂次数。
You could use a pattern like 3-2-3-2... the Numbers being the number of strokes between breaths.
应用推荐