Ships and marine technology - Graphical symbols for technical documentation - Part 36: Radio equipment, teleprinter and communication systems
船舶和海上技术.技术文件用图形符号.第36部分:无线电设备 电传打字机和通信系统
1999-01-01
GB/T 14084-1993
办公事务处理用中西文电子打字机通用技术条件
General specification of Chinese and English electronic typewriter for office management