Home / Standards / JB/T 8248.5-1995 JB/T 8248.5-1995 Abolished 照相镜头焦距的测量方法 Standard Type JB ICS N/A CCS N/A Status Abolished Issue Date 1996-04-14 Implementation 1996-04-14 Centralized Committee 机械工业部 Issuing Authority 机械工业部