機器
accuracy
ballbearings
bearings
clockworks
cog
cogwheels
concept
connection
energy
engine
engineering
engineeringpart
equipment
gears
gearwheels
industrialequipment
industrialpart
industrytool
machinepart
mechanical
mechanicalequipment
metal
metallic
metalteeth
motion
nobody
pinions
power
precision
progress
stainlesssteel
steel
studio
technology
teeth
titanium
turning
wheel
working