機器
antenna
background
blue
bright
business
cable
charge
color
communication
construction
danger
electric
electrical
electricity
energy
engine
engineering
environment
facility
generator
grid
high
industrial
industry
infrastructure
line
link
machinery
mesh
metal
network
object
pole
post
power
risk
sky
station
steel
supply
technology
tower
transmission
up
urban
volt
voltage
watt
wire
wiring
work