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RE: [쉽게 풀어 쓴 상대성 이론] Chapter 2. 갈릴레이 변환과 갈릴레이 속도 덧셈 공식
yes friends ... if any time visit my blog buddy .. I am your followers mu friend. I always upvote and resteem your post.
yes friends ... if any time visit my blog buddy .. I am your followers mu friend. I always upvote and resteem your post.