Home / Standards / GB/T 17739.4-2008 GB/T 17739.4-2008 Active Microfilming of technical drawings and other drawing office documents - Part 4:Microfilming of drawing of special and exceptional elongated sizes 技术图样与技术文件的缩微摄影 第4部分：特殊和超大尺寸图样的拍摄 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