機器
abstract
background
ball
balls
bearing
bearings
business
closeup
computer
concept
conceptual
constructing
detail
device
drive
engine
engineering
factory
gear
gearing
gears
idea
industrial
industry
iron
job
machinery
mechanism
metal
motor
occupation
part
parts
plant
plate
repair
spare
steel
storage
technology
toned
tool
vehicle
vehiclepart
wheel
workshop