nitrogen-sealed
美
英 
例句
Objective To study the occupational hazards characteristics in the process of big and small breathing loss on nitrogen sealed vault tank.
目的研究氮封拱顶化工储罐“大小呼吸”过程中的职业危害特征。
Improvement of Nitrogen-sealed Unit in Ultra-pure Water Treatment System
超纯水制备系统氮封装置的改进