JJG 492-1987
Verification Regulation of Cesium Beam Frequency Standard (English Version)
- Standard No.
- JJG 492-1987
- Language
- Chinese, Available in English version
- Release Date
- 1987
- Published By
- National Metrological Verification Regulations of the People's Republic of China
- Status
- 2009-11
- Replace By
- JJG 492-2009
- Latest
- JJG 492-2009
JJG 492-1987 history
- 2009 JJG 492-2009 Verification Regulation of Cesium Atomic Frequency Standards
- 1987 JJG 492-1987 Verification Regulation of Cesium Beam Frequency Standard
