合理化
built structure
cable
cabling
chain
charge
communication
connection
contact
distant
distribution
ecologically
electric
electric train
electricity
electrified
electronic
energetic
energy
engineering
high
infrastructure
iron
line
metal
network
overhead
power cable
power line
power supply
rail
railroad
railroad station platform
railroad track
railway
steel
steel cable
structure
supply
system
technology
tension
train
transmission
transmit
volt
voltage
volts
watt
wire