缩微摄影技术 用于“检验技术图纸缩微摄影质量测试标板”的反射率灰板
Micrographics--Reflectance test target used in the test target for inspecting the quality of micrography of technical drawing
标准状态
发布于:1988-04-12
实施于:1988-12-01
已废止
Micrographics--Reflectance test target used in the test target for inspecting the quality of micrography of technical drawing