To realize operation of combined network between nitrogen system and air system, a scheme of adding gas crossover lines is employed.
为实现供氮和供风系统的联网运行，采用了增设气体跨线的方案。
Circulated nitrogen system is designed to improve the wettability and fluidness of lead-free solder and to ensure that the solder joints are shiny and bright.
氮气循环使用，增加无铅焊料的侵润性和流动性，使锡点饱满光亮。
A mathematical model of liquid nitrogen system of a space environmental simulator is introduced and a quasi-stationary control method is developed in this paper.
大型空间环境模拟器的液氮系统庞大复杂，为满足确定控制方案、建立故障诊断模型、技术改造等的需要，建立液氮系统的数学模型是十分必要的。
This paper outlined the membrane separation technology and analyzed the application status of the technology in the propylene-nitrogen system of the polypropylene (pp) plant.
简要介绍了膜分离技术，并对膜分离技术应用于聚丙烯装置的丙烯-氮气系统的现状进行了分析。
This paper outlined the membrane separation technology and analyzed the application status of the technology in the propylene-nitrogen system of the polypropylene (pp) plant.
简要介绍了膜分离技术，并对膜分离技术应用于聚丙烯装置的丙烯-氮气系统的现状进行了分析。
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