Analyzer
Sentence analysis
10Spans
Sentence
Span Details
鉄骨
steel frame; steel beam; steel girdernoun
を
object markergrammar
溶接
weldingnoun, suru verb
する
light/support verb with a noun or noun-like phrasegrammar
作業
work; operation; tasknoun, suru verb
は
topic markergrammar
熟練
skill; expertise; proficiency; masterynoun, suru verb
が
subject markergrammar
必要
necessary; needed; essential; necessity; need; requirementna-adjective, noun
だ。
plain copulagrammar