Home / Standards / GB/T 13999-1992 GB/T 13999-1992 Active Two-track photographic soundrecords on 35mm motion-picture prints--Positions and width dimensions 35mm电影拷贝上光学双声迹的位置和宽度尺寸 Standard Type GBT ICS 37.060.20 CCS A15 Status 现行 Issue Date 1992-12-17 Implementation 1993-08-01 Responsible Dept 国家电影局 Drafting Unit N/A