Cinematography - magnetic stripes and recording head gaps for sound record on 8 mm type s motion - picture films - position and width dimensions 电影技术. 8mms型电影胶片录音用磁带和录音磁头缝隙.位置和宽度尺寸
2.
1 . cinematography - magnetic stripes and magnetic recording head gaps for sound record on 16 mm motion - picture film perforated along one edge type 1 - positions and width dimensions 电影技术.单边穿孔16mm电影胶片录音用磁带和磁头缝隙