头戴耳机通用规范
General specification for headphones
检测标准
同步数字体系(SDH)的比特率
Synchronous digital hierarchy (SDH) bit rates
电信术语电信、信道和网
Terminology for telecommunications-Telecommunications,channels and networks
光缆通信系统传输性能测试方法
The measurement methods of transmission performances on optical fiber cable communication systems
海岸电台高频无线电话频道干扰的计算方法
Interference calculation methods of coast radiotelephone station operating in high frequency bands
演播室数字电视编码参数规范
The specifications of encoding parameters of digital television for studio
数字声音信号源编码技术规范
The specifications for digital audio sourcecoding
电视广播接收机用红外遥控发射器技术 要求和测试方法
Technical requirements and measurement methods of infrared remote control radiation unit for television broadcast receivers
气象雷达参数测试方法
Measuring methods for meteorological radar parameters
天气雷达通用技术条件
Generic specification for weather radars
