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现批准《建筑隔声评价标准》为国家标准,编号为 GB/T50121—2005,自2005年10月1日起实施。原《建筑隔声评价标准》GBJ121—88同时废止。
Now approved the “evaluation criteria for building sound insulation” as the national standard, numbered GB / T50121-2005, since October 1, 2005 come into operation. The original “building sound insulation evaluation standards” GBJ121-88 abolished at the same time.