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fire rated penetration是什麼意思、英文翻譯及中文解釋

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fire rated penetration

padding-bottom: 75%;">fire rated penetration是什麼意思、英文翻譯及中文解釋

詞語: fire rated penetration

解釋: 【消】防火洞孔<建築防火構件上用來穿過管子,電纜,線槽等洞孔,它們密封后不影響防火構件的整體效能>

詞典: 消防專業英漢詞典

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