機器
abstract
automatic
automobile
automotive
background
car
closeup
cog
cogwheel
detail
drive
engine
engineering
equipment
garage
gear
gearbox
industrial
industry
iron
machinery
macro
mechanic
mechanical
mechanism
metal
metallic
motor
new
object
part
power
repair
replacement
service
shaft
shiny
spare
sprocket
steel
technical
technology
transmission
transportation
vehicle
wheel
work
workshop