 |
Chinese Classification
Professional Classification
ICS Classification
Latest
Value-added Services
|
| Chinese National Standard Category: Lens |
| English Title: | Methods of measurement for effective aperture and relative aperture of photographic lenses |
| Chinese Title: | 照相镜头有效孔径和相对孔径的测量方法 |
| Standard No.: | GB 8347-1987 |
| Category No.: | N43 |
| Issued by: | |
| Issued on: | |
| Implemented on: | |
| Status: | superseded |
| Superseded by: | JB/T 8248.2-1995 |
| Superseded on: | |
| Abolished on: | |
| Superseding: | |
| Word Count: | 5000 words |
| Similar Standards: | GB 8347-1987 GB 11156-1989 GB 9219-1988 JB/T 5668-2014 GB/T 29297-2012 JB/T 9426.1-2011 JB/T 9426.6-2011 JB/T 9426.3-2011 JB/T 9426.5-2011 JB/T 9426.2-2011 JB/T 9426.4-2011 GB/T 27510-2011 JB/T 9408-2010 JB/T 9409-2010 JB/T 9407-2010 GB/T 9917.2-2008 JB/T 5378-2007 JB/T 7464-2007 JB/T 1787-2006 JB/T 1786-2005 |
| Tel: +86-10-8572 5655 | Fax: +86-10-8581 9515 | Email: coc@codeofchina.com | QQ: 672269886 |
| Copyright: Foryou Tech Co., Ltd. 2008-2020 |