英文關鍵字
alternative
background
bearing
cable
distribution
electric
electrical
electricity
energy
engine
engineering
gear
grid
industrial
industry
line
metal
motion
network
pin
poles
power
powerful
pylon
rail
relay
reliance
sky
station
steel
structure
system
taymlaps
technology
tower
transformer
transmission
trusses
volt
voltage
watt
wire
wiring