flame brazing of aluminium bar section

例句：

1. 1.The engineer used the flame brazing process to join the two pieces of metal together.
   工程师使用火焰焊接过程将两块金属连接在一起。
2. 2. During the construction phase, flame brazing is often used to secure fasteners in place.
   在施工阶段，经常使用火焰焊接来固定紧固件。
3. 3.The company specializes in flame brazing for aerospace applications.
   该公司专门从事航空航天应用的火焰焊接。