건설과학 Construction,Science/건설영상 Video
기발한 막힌 하수관 청소하는 법 VIDEO: Cleaning the drain after a flood
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2023. 4. 17. 09:44
![기발한 막힌 하수관 청소하는 법 VIDEO: Cleaning the drain after a flood](https://blog.kakaocdn.net/dn/qC6Cn/btsaEg5WYxQ/9Ewsp5PhDqoxSmdVaPzYuK/img.gif)
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