英文關鍵字
background
beautiful
blue
business
cable
clouds
conception
conservation
construction
distribution
electric
electrical
electricity
energy
engineering
environment
grid
industrial
insulators
landscape
lapse
line
lines
loopable
metal
nature
power
pylon
pylons
saving
sky
structure
supply
supports
technology
time
tower
transformer
transmission
voltage
volts
volume
white
wires