矿井通风总阻力 overall resistance of mine airflow
通风总阻力
Total resistance of ventilation
以上为机器翻译结果，长、整句建议使用 人工翻译 。
强调排烟工况下管网总阻力、漏风量均远大于通风空调工况，必须严格认真地计算。
Emphasizes that the resistance of the pipe system and the air infiltration rate under smoke exhausting are far more than those under ventilation, so as to need a careful calculation.
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