acetylene welding

acetylene welding set

[化] 乙炔焊装置; 乙炔气焊装置

air-acetylene welding

[机] 空气乙炔熔

oxy-acetylene welding

[化] 气焊; 氧-乙炔焊

oxyacetylene welding

[机] 氧乙炔熔接, 气焊

oxyacetylene welding outfit

[化] 氧炔气焊机; 氧乙炔气焊机