butt welding

part, component, short for 部分品

to use, make use of, utilize / to adopt, employ / to appoint, assign / to employ, hire / to need

connection / (grammar) Clipping of 接続詞: conjunction

connect

a weld; welding

to weld, to weld together

metal

two things [small or without a counter category]

(chiefly women's speech) first person singular pronoun: I, me