GB/T 17739.2-2021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控制标准
英文:Microfilming of technical drawings and other drawing office documents—Part 2:Quality criteria and control of 35mm sil...
英文:Microfilming of technical drawings and other drawing office documents—Part 2:Quality criteria and control of 35mm sil...