AS 60118.4-2007 Hearing aids Part 4 Magnetic field strength in audiofrequency induction loops for he

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标准类别：国外标准

关键词： AS 60118.4 2007 Hearing aids

标准简介

AS 60118.4-2007 Hearing aids Part 4 Magnetic field strength in audiofrequency induction loops for hearing aid purposes