機器
alternator
ampere
artistic
auto
automotive
belt
bokeh
car
charge
closeup
coil
convert
converter
copper
current
drive
electric
electrical
electricity
energy
equipment
gear
generate
generator
industrial
industry
kinetic
light
macro
mechanical
metal
modern
object
part
power
repair
rotation
service
shallow focus
spare
technology
transport
transportation
vehicle
voltage
winding
working