小型制氮机的工作原理与变压吸附式制氮机工作原理相同，主要应用于食品包装上。

Small nitrogen machine works with the pressure swing adsorption nitrogen machine works the same, mainly used in food packaging.

youdao

小型制氮机的工作原理与变压吸附式制氮机工作原理相同，主要应用于食品包装上。

Small nitrogen machine works with the pressure swing adsorption nitrogen machine works the same, mainly used in food packaging.

youdao