機器
apparatus
arrangement
background
binding
bond
car
character
clockwork
closeup
cog
cogwheel
concept
conceptual
connect
connection
design
engine
engineering
factory
gear
gearbox
gearing
idea
industrial
industry
iron
machineparts
machinery
mechanical
mechanicalparts
mechanics
mechanism
metal
metallic
motion
nobody
object
old
part
precision
rotate
steampunk
steel
technology
teeth
transmission
turn
type
wheel