The applying of adaptive noise canceling technology on carrier telephone of electric locomotive undergrourd;
井下电机车载波电话自适应除噪技术的应用
high -frequency channel
高频电路, 载波电话通路
power line carrier telephone terminal
电力线载波电话终端机
carrier telephone multiplexing equipment
载波电话多路复用设备
digital carrier telephone terminal machine
数字载波电话终端机
valve 3-channel carrier telephone terminal equipment
三路电子管载波电话终端机
transistorized 60-channel balanced cable carrier telephone system
晶体管60平衡电缆路载波电话设备
transistorized 3-channel carrier telephone terminal equipment
三路晶体管载波电话终端机
open-wire 12-channel carrier telephone terminal equipment
明线１２路晶体管载波电话终端机
Products packaging of carrier telephone equipment
GB/T13038-1991载波电话设备包装
Performance requirements for 120-channel submarine coaxial cable carrier telephone equipment
GB/T13431-1992120路海底同轴电缆载波电话设备技术要求
Performance requirements for 24-channel submarine coaxial cable carrier telephone equipment
GB/T13430-199224路海底同轴电缆载波电话设备技术要求
Measurement methods for 120-channel submarine coaxial cable carrier telephone equipment
GB/T13429-1992120路海底同轴电缆载波电话设备测试方法
Measurement for 24-channels submarine coaxial cable carrier telephone equipment
GB/T13425-199224路海底同轴电缆载波电话设备测试方法
Specification for 12-channel transistorized carrier telephone equipment on an open-wire pair
GB/T5446-1985明线12路晶体管载波电话设备技术要求
Requirements for 3-channel carrier telephone equipment on an open-wire pair
GB/T6555-1986明线3路载波电话设备技术要求
The test methods for 60-channel symmetrical cable carrier telephone equipment
GB/T4770.3-1984对称电缆60路载波电话设备主要性能的测试方法
Specification for HF 12-channel transistorized carrier telephone equipment on an open-wire pair
GB/T5445-1985明线高12路晶体管载波电话设备技术要求
The test methods for 12-channel open wire carrier telephone equipment
GB/T4770.2-1984明线12路载波电话设备主要性能的测试方法