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welding burner
auto. 焊炬; 焊灯
oil 焊炬喷嘴
tech. 焊枪; 焊接喷灯; 焊炬 (喷嘴); 焊炬烧嘴; 焊工喷烧器
welding burner: 1 phrase in 1 subject
Metallurgy1