[소방설비기계] 옥외소화전설비의 개념 및 작동원리
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Channel: 물뿜는하마
Views: 11,896
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Keywords: 옥외소화전설비, 옥외소화전함, 옥외소화전, 옥외소화전설비작동순서
Id: D9NRhhyC8Uk
Channel Id: undefined
Length: 8min 26sec (506 seconds)
Published: Sun Feb 02 2020
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