为满足补风需要，设机械加压送风系统，送风量按不小于排烟量的50%计算。
To satisfy the demands for air supplement, mechanical pressurized air supply system is set. Air supply level is calculated by no less than 50% of smoke exhaust level.
研究了机械排烟口的布置和排烟量对火灾烟气排放有效性的影响。
The present study explores the effects of location of the mechanical exhaust vents and mechanical exhaust rate on the effectiveness of smoke extraction.
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