에너지관리기능사 실기_제10강 공개도면1번 강관,동관 풀작업(커팅,나사절삭,강관조립,동관작업,치수측정,수압시험)
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Channel: 에듀강닷컴TV
Views: 160,207
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Id: JVxBu5DlC8Q
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Length: 141min 36sec (8496 seconds)
Published: Tue Mar 16 2021
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