機器
arrow
bill
box
closeup
collection
construction
control
display
electric
electrical
electricity
electronics
element
energy
engineering
equipment
fuel
gauge
glass
graduation
home
illustration
industrial
industry
instrument
isolated
measure
measurement
metal
meter
number
panel
pointer
power
pressure
pump
red
reflection
residential
scale
science
service
set
technology
tool
water
watt
white