求翻译：国内《煤矿安全规程》执行说明中对矿井避难硐室提出了要求。矿井避难硐室必须构筑严密或采用正压排风，以免有害气体侵入，使避难人员受害。具体正压值没有叙述是什么意思？

Domestic "Coal Mine Safety Regulations" the implementation of instructions of the mine refuge chamber made requests. Mine refuge chamber must be used to build a close or positive pressure ventilation to prevent harmful gases penetrated, so that shelter staff suffer. Positive values ​​do not describe

Domestic implementation of the coal mine safety in mines, ideal for refuge. It is necessary to establish a tight room ideal refuge pits or adopt positive pressure ventilation, so as to avoid harmful gas penetrated to asylum officers injured. There is no described specific positive pressure value

Domestic "Coal mine safety Regulations" carried out in showing to seek asylum mountain cave the room to the mine pit to set the request.The mine pit seeks asylum mountain cave the room to have to construct strict or uses a positive pressure row of wind, in order to avoid the noxious gas invasion, ca

In the domestic implementation of the coal mine safety regulations for notes on mine refuge Chamber set requirements. Mine refuge Chamber must build a tight, or the use of positive pressure ventilation, so as to avoid harmful gases penetrated, asylum officers injured. Specific positive values not de

Domestic "Coal Mine Safety Regulations" the implementation of instructions of the mine refuge chamber made requests. Mine refuge chamber must be used to build a close or positive pressure ventilation to prevent harmful gases penetrated, so that shelter staff suffer. Positive values ​​do not describe