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 China 'GB/T 25498.5-2017 ' standard english version:

　

NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA

GB/T 25498.5-2017

Electroacoustics—Simulators of human head and ear—Part 5：2 cm3 coupler for the measurement of hearing aids and earphones coupled to the ear by means of ear inserts
电声学 人头模拟器和耳模拟器 第5部分：测量助听器和以插入方式与人耳耦合的耳机用2cm3声耦合器
Issued Date:2017-09-07 　 Implemented Date:2018-04-01
Issued by: 　 The Standardization Administration of the People's Republic of China
　

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GB Standard Code GB/T 25498.5-2017
Standard Category China National Standards
GB Standard English Title Electroacoustics—Simulators of human head and ear—Part 5：2 cm3 coupler for the measurement of hearing aids and earphones coupled to the ear by means of ear inserts
GB Standard Chinese Title 电声学 人头模拟器和耳模拟器 第5部分：测量助听器和以插入方式与人耳耦合的耳机用2cm3声耦合器
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