Dk환경기술연구소 [교사내소음 측정] 복도측
Synopsis
대한민국 1등 환경측정회사를 목표로 모인 측정인들 !!! 교사내 소음 측정 교사내 소음은 학교보건법에 따라 55dB 이하로 관리가 ...
![DK환경기술연구소 [교사내소음측정] 창측](https://i.ytimg.com/vi/eLFcH7tDUsM/hq720.jpg?sqp=-oaymwE2CNAFEJQDSFXyq4qpAygIARUAAIhCGAFwAcABBvABAfgB_gmAAtAFigIMCAAQARhlIFkoTTAP&rs=AOn4CLBd8rj0PJVG9sADAsOHaNrSsAKnvg)
![[공지] 소음측정관련 정정 영상 - 죄송합니다 ㅠㅠ](https://i.ytimg.com/vi/6fuwDd1mKBM/hq720.jpg?sqp=-oaymwEcCNAFEJQDSFXyq4qpAw4IARUAAIhCGAFwAcABBg==&rs=AOn4CLAFtL-Hn5ioY7Ag89QCC2Hqq-Hwow)
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