SJ 1739-1981
Outline dimension series for acoustic devices for use in communication (English Version)

Standard No.

SJ 1739-1981

Language

Chinese, Available in English version

Release Date

1981

Published By

Professional Standard - Electron

Status

Withdraw 2010-02

Latest

SJ 1739-1981

SJ 1739-1981 history

• 1981 SJ 1739-1981 Outline dimension series for acoustic devices for use in communication