機器
abrasive
accuracy
automate
background
carbide
circle
cnc
cut
detail
engine
engineering
equipment
factory
grind
grinding
grindstone
hole
industrial
industry
iron
lathe
lubricant
machinery
machining
manufacture
manufacturing
mechanical
metal
metalwork
metalworking
polish
power
precision
process
processing
production
rotate
rotation
sharpening
spark
sparks
spin
steel
technology
tool
tooling
work
workplace
workshop