Two-track photographic sound records on 35mm motion-picture prints—Positions and width dimensions
NEQ ISO 7343-84
广播电影电视部中国电影科学技术研究所
This standard is the original Chinese electronic standard. If you need translation, please contact email: ChineseStandardsLibraryS001@gmail.com. After you successfully purchase, we will send the electronic version of this standard to your email address
