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.
结果表明，大型地下商场宜采用远端自然送风、近端机械排烟方式；
The results show that natural ventilation far from the fire and mechanical exhaust near to the fire is proposed in a large underground emporium.
通过分析机械加压送风系统的方式、送风量及影响因素，对机械加压送风系统的几种方式进行了计算机模拟。
The several different mechanical pressure air supply systems are simulated by analyzing the style of pressurization air supply system, air volume and its influence factors.
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