機器
air
aluminium
aluminum
arrow
auto
barometer
black
blow
boiler
car
clock
closeup
color
compression
conceptual
device
digits
energy
engine
equipment
gas
gasoline
gauge
indication
industry
macro
maintenance
manometer
measure
measurement
metal
meter
nippel
nut
old
pipe
pipeline
pressure
red
steam
technology
tire
tool
tyre
vacuum
valve
vehicle
wheel
white