China 'GB/T 20485.21-2007
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 20485.21-2007
Methods for the calibration of vibration and shock transducers - Part 21: Vibration calibration by comparison to a reference transducer 振动与冲击传感器校准方法 第21部分:振动比较法校准
Issued Date:2007-07-02
Implemented Date:2007-12-01
Issued by:
The Standardization Administration of the People's Republic of China