Standard No.:	GB/T 4637-1994
English Name:	Head gaps and sound records for three－, four－, or six－track magnetic sound records on 35mm motion－picture film containing no picture-Positions and width dimensions
Chinese Name:	35mm磁片上三声轨、四声轨和六声轨磁头隙缝的位置和宽度尺寸
Chinese Classification:	A15    Film and Photographic Technology
Professional Classification:	GB    National Standard
Source Content Issued by:	CSBTS
Issued on:	1994-1-2
Implemented on:	1995-8-1
Status:	valid
Superseding:	GB 4637-1984 Recording and reproducing head gaps for monophonic and three magnetic sound records on 35mm motion-picture film--Positions and width dimensions GB 5877-1986 Recording head gaps for six magnetic sound records on 35mm motion-picture film containing no picture--Position and width dimensions GB 5876-1986 Recording head gaps for four magnetic sound records on 35mm motion-picture film containing no picture-position and width dimensions
Target Language:	English
File Format:	PDF
Word Count:	3000 words
Translation Price(USD):	90.0
Delivery:	via email in 1~3 business day

本标准规定了35mm磁片上三声轨、四声轨和六声轨录音磁头和还音磁头隙缝的位置和宽度尺寸，还规定了磁头方位角、磁片运行方向及其涂磁层朝向。本标准适用于电影专用的35mm磁片上三声轨、四声轨和六声轨的录音和还音。