機器
alloy
background
belt
clean
cog
details
different
engine
engineering
equipment
exposed
factory
gear
gears
grey
industrial
industry
iron
light
machinery
manufacturing
many
material
mechanical
mechanism
metal
metallic
motor
move
object
part
pipe
power
powerful
pressure
production
raging
repair
rim
rotor
stainless
steel
technology
torque
transfer
transmission
vehicle
view
work