通信光缆 第3部分:综合布线用室内光缆
Optical fibre cables for telecommunication-Part 3:Indoor optical fibre cables for generic cabling
检测标准
通信光缆 第2部分:核心网用室外光缆
Optical fibre cables for telecommunication-Part 2:Outdoor optical fibre cables for core networks
通信光缆 第1部分:总则
Optical fibre cables for telecommunication-Part 1:General
通信光缆 第4部分:接入网用室外光缆
Optical fibre cables for telecommunication-Part 4: Outdoor optical fibre cables for access networks
2048kbit/s、8448kbit/s、34368kbit/s、139264kbit/s光端机技术要求
Technical requirement for2048kbit/s,8448kbit/s,34368kbit/s,139264kbit/s optical line terminals
电视、调频广播场强测量方法
Measurement method ofTV,FM broadcasting field strength
信封
Envelopes
电信设备通用文字符号
Letter symbols for telecommunication equipment
语文学习系统通用技术条件
General specification for language learning systems
电声学 助听器通用规范
Electroacoustics-General specification for hearing aids
