Lastly, the measurements of the cigarette filter ventilation and pressure drop were taken using a KC3 combined dilution/pressure drop instrument (Borgwaldt-KC, Richmond, Virginia, USA).
The risk was greater when high flow oxygen therapy and positive airway pressureventilation was used.
进行高流量氧气和正压通气能增加传播的风险。
3
Natural ventilation in heated pressure occupies a more and more important position in the building ventilation design because of being free from outside factor influence.