Home / Standards / GB/T 23903-2009 GB/T 23903-2009 Active Resolution indicators for ray image 射线图像分辨力测试计 Standard Type GBT ICS 19.100 CCS J04 Status 现行 Issue Date 2009-05-26 Implementation 2009-12-01 Responsible Dept 国家标准委 Drafting Unit N/A