Blowtorch: a portable burner for mixing gas and oxygen to produce a very hot flame used for soldering welding and glass blowing.
喷灯：使混合气体和氧气产生更炽热火焰的便携助燃剂，常用于接合，焊接和玻璃吹制。
2
Blowtorch: a portable burner for mixing gas and oxygen to produce a very hot flame used for soldering welding and glass blowing.
喷灯：使混合气体和氧气产生更炽热火焰的便携助燃剂，常用于接合、焊接和玻璃吹制。
3
All these and other developments show that welding is no longer what it was in time past, the simple matter of running a bead with a gasflame or a stick electrode.