无中继长距离光纤通信
repeaterless ultra-long haul optical fiber communication
无中继长距离光纤通信线路
unrepeated long haul optical fiber trunk
短距离通信
Short-distance Communication
short-haul communication
short haul communication
极限通信距离
Limiting communication distance
通信距离
link range
communication distance
Distance of communication
distance of commucation
haul
communication range
有效通信距离
effective communication range
远距离通信
Telecommunication
Long-distance Communications
trunk communication
远距离通信和数据交换
highspeed communication and Data exchange
远距离通信中心装置
remote communications central set
中距离通信
medium-distance communication
Communication
medium-distance
专用短距离通信
dedicated short range communications
dedicated short range communication