Home / Standards / GB/T 4639-2000 GB/T 4639-2000 Active Cinematography--Monophonic 35mm negative photographic sound record on 35 mm motion-picture film--Position and maximum width dimensions 35mm单声道电影光学声底片上声迹的位置和最大宽度尺寸 Standard Type GBT ICS 37.060.20 CCS A15 Status 现行 Issue Date 2000-10-17 Implementation 2001-03-01 Responsible Dept 国家电影局 Drafting Unit 国家电影局