安全负压通风系统
Safety subatmospheric pressure ventilation system
差压通风计
differential draught ga(u)ge
差压通风预冷
Pressure drop ventilation precooling
differential pressure pre - cooling
forcedair precooling
pressure precooling
分区正压通风
positive zone pressurization
负压通风
negative-pressure ventilation
negative pressure ventilation
balanced draft
induced draft
均压通风
even pressure ventilation
fire area opening and closing