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
长距离无压引水隧洞
long-distance non-pressure water diversion tunnel
long tunnel
LNG长距离输送
LNG long-distance transportation
RNA长距离移动
RNA long-distance movement
长距离并联输水箱涵
long distance water diversion with multihole culvert
长距离测量
long range measurement
remote distance measurement
长距离超声导波
long range guided wave ultrasonic testing
长距离传输
Long-distance Communication
long distance transmission
long haul transmission