機器
abstract
aesthetic
background
binding
black
bond
business
classic
cogs
cogwheel
concept
conceptual
connect
cooperation
design
engine
engineering
equipment
factory
gear
gearbox
gears
grey
industrial
industry
interlock
macro
mechanical
mechanics
mechanism
metal
metallic
motion
motor
motorcycle
parts
precious
precision
rotate
shine
spares
steel
success
team
teamwork
technology
teeth
wheel
work