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 pressure value; second is to maintain pressure. System pressure value is very important pressure indicators, and only reaches a certain value in order to meet the purpose of isolation of toxic gases

Refuge pits demonstrated positive pressure system is set up, room consists of two parts: one is positive pressure differential pressure value is set; 2. Positive pressure value is a positive pressure system 10 important indicators in the study, only up to a certain value will be needed to meet the p

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.The positive pressure value is in the positive pressure system research the extremely important tar

Mine refuge chamber pressure system consists of two parts: one is the pressure value is set; second pressure differential maintained. 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 gas

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