機器
abstract
automatic
board
box
business
button
cabinet
cable
center
circuit
closeup
control
distribution
electric
electrical
electricity
electronic
energy
engineer
equipment
factory
generator
industrial
industry
lamp
machines
manufacturing
metal
meter
monitor
panel
plant
power
power lines
processes
production
protections
room
safety
substation
supply
switch
system
technical
technology
turbines
voltage
white
work