Home / Standards / GB/T 25102.4-2010 GB/T 25102.4-2010 Active Electroacoustics - Hearing aids - Part 4: Induction loop systems for hearing aid purposes - Magnetic field strength 电声学 助听器 第4部分:助听器用感应回路系统磁场强度 Standard Type GBT ICS 17.140.50 CCS M72 Status 现行 Issue Date 2010-09-02 Implementation 2011-04-01 Responsible Dept 工业和信息化部(电子) Drafting Unit N/A