nitrogen-sealed

nitrogen-sealed

 英

  • 网络氮封

例句

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

目的研究拱顶化工大小呼吸过程职业危害特征

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

纯水制备系统装置改进

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