China National Standards

China Measurement microphones―Part 4: GB Standards List

  •  China "Measurement microphones―Part 4:" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 20441.4-2006 Measurement microphones―Part 4: Specifications for working standard microphones
    测量传声器 第4部分: 工作标准传声器规范    		 China National Standards
    Measurement microphones―Part 4:
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