1、The preferred method is by oxyacetylene flame.
最好采用氧炔焰加熱方法。

2、Oxyacetylene flame is the hottest one known for ordinary use.
氧炔焰是常規(guī)用途中最熱的火焰。

3、Oxyacetylene flame can' be used for welding of pipeline.
管道焊接不得使用氧乙炔焰焊接。

oxyacetylene翻譯