The influence of the traffic air exchange force on ventilation in tunnels is not negligible.
交通换气力对隧道通风的影响是不容忽视的。
Through the discussion of the resistance properties of natural ventilation induced by wind force, a method of local pressure loss superposition was proposed to calculate the pressure loss.
探讨了风压作用下大开口的自然通风阻力特性，并提出了用局部损失迭加法来计算阻力损失，即认为通过建筑物的气流是由不同的突缩段和突扩段的组合。
In uranium mine ventilation, wind force, wind pressure and wind direction are the three major factors affecting radon reduction technology.
铀矿通风中，风量、风压和风流方向是三个影响降氡技术的重要因素。
The power DT1, DT2 power, C port A, D port and exhaust ventilation, compressed air to push the piston rod oil cylinder forward, realize the preloading force state in figure 2;
DT1通电，DT2断电，C气口通气A、D气口排气、压缩空气将油压到油缸内推动活塞杆前移，实现预压出力状态如下图2；
This article studies the characteristics of the coefficient of resistance of skylight Ventilation under the action of outdoor wind force.
本文研究了室外风作用下，天窗排风阻力系数的特性。
This article studies the characteristics of the coefficient of resistance of skylight Ventilation under the action of outdoor wind force.
本文研究了室外风作用下，天窗排风阻力系数的特性。
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