关于FCAW焊接的一些问题（英文
问题描述：
关于FCAW焊接的一些问题（英文
Name three uses for FCAW welding.
Name the three parts of the FCAW welding machine.
What is the length of the wire at the end of nozzle called?
At what angle should the gun be held?
Overhead welding is similar to what other welding position.
答
焊机、送丝盘、保护气
干伸长度
30°
第四个问题不是很肯定,立向上焊