JJF 1213-1990
Technical specification for reference operation of gear helix (English Version)
- Standard No.
- JJF 1213-1990
- Language
- Chinese, Available in English version
- Published By
- National Metrological Technical Specifications of the People's Republic of China
- Status
- 2009-01
- Replace By
- JJF 1213-2008
- Latest
- JJF 1213-2008
JJF 1213-1990 history
- 2008 JJF 1213-2008 Calibration Specification for the Pulmonary Function Measuring Instrument
- 1970 JJF 1213-1990 Technical specification for reference operation of gear helix
