機器
abstract
accuracy
aesthetic
automobile
automotive
backdrop
background
black
bond
box
business
classic
clockwork
closeup
concept
conceptual
design
engage
engine
equipment
factory
gear
gearbox
grey
industry
interlock
machinery
macro
mechanic
metal
motion
motor
motorcycle
oil
perfect
power
precision
repair
steel
strength
strong
success
team
teamwork
teeth
transmission
wheel
work