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This paper proposes to reduce a heavy − weight impact noise of double fi oor ． The magnetic Ievitated leg using the repulsion of permanent magnet has been developed to isolate the impact force f ｝ om the double floor ． In the experiments ， constructio 皿 me 出 od ef the magnetic levi 匸ated legs is investigated 丘 om the displacement of static or impact load ， and the floor impact noise ， The experimenta 】res ロ 1ts show that

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