機器
abstract
background
blue
clock
clockwork
closeup
cog
cogwheel
color
concept
connect
crosssection
design
engine
equipment
gear
gear set
gearbox
gearing
industrial
industry
instrument
machinery
manufacturing
mechanical
mechanics
mechanism
metal
metallic
motor
movement
object
part
pinion
power
precise
precision
rotation
shape
steel
teamwork
turning
united
watch
wheel