申請中
background
blue
break
broadband
brown
cable
close
closeup
color
commercial
communication
conductor
connect
construction
contractor
copper
cord
cut
domestic
electric
electrical
electrician
electricity
energy
faulty
flow
idea
incident
industry
insulation
isolated
isolation
material
mile
network
plastic
power
problem
return
sender
technology
telecommunication
telecommunications
telephone
torn
voltage
white
wire