I Didn't Know That : Concrete Tent

영어강의 : National Geographic

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조회 수 759 추천 수 0 2014.02.01 20:26:25

chanyi *.184.184.90 https://enjoyenglish.co.kr/Youtube_Geographic/536425

Watch Richard Ambrose and Jonny Phillips quickly construct a building made of concrete canvas—a material that has all the elements of concrete, but is flexible enough to be turned into any shape. This technology allows people to erect permanent structures in a fraction of the time needed for traditional building techniques.

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