China National Standards

China 20Hz Industry Standards English PDF List

  •  China "20Hz" Industry Standards English PDF List:
    • Standard  Code Standard Title Standard Class Order
    JJF 1340-2012 Calibration Specification for Vector Hydrophones in Frequency Range 20Hz to 2000 Hz
    20hz～2000hz矢量水听器校准规范    		 China Metrological Standards
    20Hz
    English PDF

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