welder

详细解释:n. 焊接工
【化】 焊机

英语解释：

名词 welder:

joins pieces of metal by welding them together

详细解释：

weld.er

n.（名词）
also wel.dor [-d…r] A person who welds, especially as a profession.
also wel.dor [-d…r] 焊接工人：尤指以焊接为职业的人
A device that is used for welding.
焊接机：用来焊接的装置