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
differential pressure pre - cooling
forcedair precooling
pressure precooling
Pressure drop ventilation precooling
分区正压通风
positive zone pressurization
负压通风
balanced draft
negative-pressure ventilation
negative pressure ventilation
induced draft
均压通风
fire area opening and closing
even pressure ventilation