乙炔生产的剩余20%主要用于氧乙炔切割、热处理和焊接。

The remaining 20%of the acetylene production is principally used for oxyacetylene cutting, heat treating, and welding.

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乙炔生产的剩余20%主要用于氧乙炔切割、热处理和焊接。

The remaining 20%of the acetylene production is principally used for oxyacetylene cutting, heat treating, and welding.

youdao