求翻译：矿井避难硐室正压系统建直包括两部分：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 to build straight, including two parts: First, the pressure value is set; 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 i

Positive pressure system ideal refuge pits room has been built consists of two parts: one is positive pressure differential pressure value is set-up; 2 maintain a positive pressure value in the study is a positive pressure system 10 important indicators, only reaches a certain value to meet the purp

The mine pit seeks asylum mountain cave the room positive pressure is the integrated construction straight 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 extremel

Mine refuge Chamber straight positive 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 is

Mine refuge chamber pressure system to build straight, including two parts: First, the pressure value is set; 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 i