機器
3d
automobile
background
binding
clockwork
cog
cogwheel
concept
connect
connection
cooperation
engine
engineering
equipment
factory
gear
gearbox
gearing
idea
industrial
industry
interlock
interlocked
machinery
macro
mechanical
mechanics
mechanism
metal
metallic
motor
part
power
precision
progress
rotation
steel
strength
symbol
teamwork
technical
technology
teeth
together
transmission
turning
united
wheel
work