That is to say, the improvement of the capability of the fan can help to overcome the problem of the total ventilation resistance drift.
提高通风机能力，有利于克服通风机通风系统总风阻飘移的问题；
Ships and Marine technology - Ventilation of cargo Spaces where vehicles with internal combustion engines are driven - Calculation of theoretical total airflow required.
船舶和海运技术。可通过内燃机车辆的货舱舱位之间的通风量。所需总气流流量的理论计算。
Dust sample in blast pipe was collected when centralized air ventilation system was off, the total content of the bacterium and fungus was examined.
集中空调关闭期间，采集集中空调通风系统送风管内的积尘样品，检测其细菌总数、真菌总数；
Controlled cycle ventilation is a new ventilation system. We could increase the effective volume of wind at work face without increasing the total volume of fresh air in the mine.
受控循环通风是一种新型的通风方式，在不提高矿井总的新鲜风量的同时，就能提高工作面的有效风量。
The illumination, assessment index of positive and negative ions and total bacteria in office with air-conditioner were lower than those of natural ventilation office (P< 0.01).
空调办公环境的照度、正负离子评价指数及细菌总数均低于自然通风办公环境（P< 0.01）；
Conclusions Unplanned extubation of mechanical ventilation patient can prolong mechanical ventilation period? ICU period and total hospital period, but it doesn't increase mortality.
结论机械通气病人发生非计划拔管可延长机械通气时间、住icu时间和住院的时间，但不增加死亡率。
Conclusions Unplanned extubation of mechanical ventilation patient can prolong mechanical ventilation period? ICU period and total hospital period, but it doesn't increase mortality.
结论机械通气病人发生非计划拔管可延长机械通气时间、住icu时间和住院的时间，但不增加死亡率。
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