機器
abstract
background
binding
classic
clockwork
close
closeup
cog
cogwheel
concept
conceptual
connect
connection
design
detail
engine
engineering
equipment
factory
gear
gearbox
gearing
idea
industrial
industry
interlock
interlocked
iron
machinery
macro
mechanical
mechanics
mechanism
metal
metallic
motion
objects
part
parts
power
precision
steel
teamwork
technology
teeth
transmission
up
wheel
work