The important specialties of CO2 welding machine and its study evolution are follow set forth.

接着阐述了CO_2焊接的特点、目前国内外的研究现状。

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The important specialties of CO2 welding machine and its study evolution are follow set forth.

接着阐述了CO_2焊接的特点、目前国内外的研究现状。

youdao