The preferred method is by oxyacetylene flame.

最好采用氧炔焰加热方法.

The preferred method is by oxyacetylene flame .

最好采用氧炔焰加热方法。

Oxyacetylene flame can' be used for welding of pipeline.

管道焊接不得使用氧乙炔焰焊接。

Ni-based and Co-based alloy coatings were made on the Q235 steel substrate by oxyacetylene flame spraying and fusing.

采用氧乙炔火焰喷熔法在Q235钢表面制备了镍基和钴基合金涂层。

Welding and cutting in 1949, Beijing has geo-drilling, electric welding and cutting etc oxyacetylene flame manual operation.

焊接与切割1949年，北京已有气焊、电弧焊及氧乙炔火焰切割等手工作业。