英文關鍵字
aerial
cable
closeup
cloud
clouds
communication
consumption
current
danger
development
dramatic
electric
electrical
electricity
electrons
energy
environment
equipment
flow
fuel
generation
generator
high
highvoltage
hill
industrial
industry
lapse
line
lines
link
metal
mountain
nature
plane
power
pylon
range
red
scenics
sign
silhouette
southern
structure
supply
technology
transmission
utility
voltage
wire