nitrogen-sealed

nitrogen-sealed

 英

  • 網絡氮封

例句

Objective To study the occupational hazards characteristics in the process of big and small breathing loss on nitrogen sealed vault tank.

目的研究拱頂化工大小呼吸過程職業危害特征

Improvement of Nitrogen-sealed Unit in Ultra-pure Water Treatment System

純水制備系統裝置改進