機器
abstract
background
cnc
cog
cutter
cutting
cylindrical
drill
engineering
equipment
factory
gear
gears
hard
helix
hob
hobbing
industrial
industry
involute
lubricants
lubrication
machinery
machining
manufacture
manufacturing
master
mechanical
metal
metalwork
milling
movement
pinion
precision
pressure
processing
production
quality
rapid
services
shaper
spline
steel
strength
technology
teeth
tool
wheel
work