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.
目的研究氮封拱頂化工儲罐“大小呼吸”過程中的職業危害特征。
Improvement of Nitrogen-sealed Unit in Ultra-pure Water Treatment System
超純水制備系統氮封裝置的改進