Home / Standards / GB/T 17739.2-2006 GB/T 17739.2-2006 Abolished Microfilming of technical drawings and technical documents - Part 2: Quality criteria and control of 35mm silver gelatin microfilms 技术图样与技术文件的缩微摄影 第2部分: 35mm银-明胶型缩微品的质量准则与检验 Standard Type GBT ICS 37.080 CCS A14 Status 废止 Issue Date 2006-08-23 Implementation 2007-02-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委