Home / Standards / GB/T 18405-2008 GB/T 18405-2008 Active Micrographics - ISO character and ISO test chart No.1 - Description and use 缩微摄影技术 ISO字符和ISO 1号测试图的特征及其使用 Standard Type GBT ICS 37.080 CCS A14 Status 现行 Issue Date 2008-07-16 Implementation 2009-01-01 Responsible Dept 国家标准委 Drafting Unit N/A