建設現場で配管のバルブに触れながらOJT教育と設備点検を行う現場監督
Schlüsselwörter
construction site,
piping,
checking,
training,
training,
tablet,
affirmation,
working man,
japanese,
man,
aged,
50's,
helmet,
architecture,
digitization,
construction industry,
working man,
training,
indoor
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