ISO 162:1985
电影 35mm磁片上三声轨、四声轨或六声轨和17.5mm磁片上单声轨录音和磁头隙缝 位置和宽度尺寸
Cinematography; Head gaps and sound records for three-, four-, or six-track magnetic sound records on 35 mm and single-track on 17,5 mm motion-picture film containing no picture; Positions and width dimensions