機器
automobile
automotive
background
closeup
cnc
cog
cogwheel
concept
connection
drive
engine
engineering
equipment
gear
gearbox
gearing
industrial
industry
iron
isolated
machinery
machining
manufacturing
mechanical
mechanism
metal
metallic
milling
module
molds
part
pinion
pitch
power
production
repair
shaft
shiny
spiral
steel
technical
technology
teeth
tool
transmission
turning
vehicle
wheel
work