Hellow guys, Welcome to my website, and you are watching 배가 물위를 떠다니는 원리는? - 수천 톤의 선박도 물에 띄우는 원리 ‘부력’과 ‘평형수’ / YTN 사이언스. and this vIdeo is uploaded by YTN 사이언스 at 2017-02-08T17:53:50-08:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.
