Home / Standards / GB/T 11453-1989 GB/T 11453-1989 Abolished Methods of measurement of performance characteristics of hearing aids under simulated in situ working conditions 模拟实际工作条件下的助听器性能测量方法 Standard Type GBT ICS 17.140 CCS L31 Status 废止 Issue Date 1989-06-29 Implementation 1990-04-01 Responsible Dept 工业和信息化部(电子) Drafting Unit N/A