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  • gochangkorea.co.kr/%ec%8b%9c%ec%9e%a5-%ec%a1%b0%ec%82%ac/364729/%ea%b8%80%eb%a1%9c%eb%b2%8c-300-400-mhz%ec%9d%98-%ed%95%b5-%ec%9e%90%ea%b8%b0-%ea%b3%b5%eb%aa%85-%eb%b6%84%ea%b4%91%ea%b8%b0-nmr-%ec%8b%9c%ec%9e%a5-2021-%ec%a3%bc%ec%9a%94-%ec%a0%9c%ec%a1%b0/ (port 80)