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18.97.9.172
18.97.9.172
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광산용 전등 방폭구조 시험법제정 ( 안 ) EN 50033 ( 1991 년 )
EN 50033 ( 1991 ) Electrical apparatus for potentially explosive atmospheres - Caplights for mines susceptible to firedamp
J . K . SMITH
UCI I410-ECN-0102-2008-530-002066418
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