求翻译：矿井避难硐室正压系统建立包括两部分：一是正压值设定；二是压差维持 正压值是正压系统研究中十分重要的指标，只有达到一定数值才能满足隔绝有毒有害气体的目的是什么意思？

Mine refuge chamber pressure system set up consists of two parts: First, set the value of pressure; the second is the value of a positive pressure to maintain positive pressure in the system of indicators is very important, and only reaches a certain value in order to meet the purpose of isolation o

Refuge pits demonstrated positive pressure system is set up, composed of two parts: One is that it is pressure value is set; 2 differential pressure maintaining positive pressure value is a positive pressure systems research in important indicators, only 10 reaches a certain value to meet the purpos

The mine pit seeks asylum mountain cave the room positive pressure system establishment including two parts: One is the positive pressure value hypothesis; Two is the differential pressure maintenance positive pressure value is in the positive pressure system research the extremely important target,

Mine refuge chamber pressure system consists of two parts: one is the pressure value is set; the second is the pressure difference to maintain positive pressure value is positive pressure systems are important in the indicator, only reaches a certain value to meet the purpose of isolated from toxic

Mine refuge chamber pressure system set up consists of two parts: First, set the value of pressure; the second is the value of a positive pressure to maintain positive pressure in the system of indicators is very important, and only reaches a certain value in order to meet the purpose of isolation o