ventilation pressure loss
... pneumatic drilling machine 风[气]动钻机 pneumatic drop 风压降 pneumatic elevator 气流式升运器 ...
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风阻压降 wind resistant pressure difference
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。
In uranium mine ventilation, wind force, wind pressure and wind direction are the three major factors affecting radon reduction technology.
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