英文關鍵字
automatic
billet
blank
chips
chuck
clamped
closeup
cutter
drill
drilling
equipment
factory
gyration
industrial
industry
inside
iron
lathe
layer
machine
machining
manufacture
manufacturing
metal
metallic
metalworking
milling
parts
perforator
plant
process
production
removing
rotation
shaving
shavings
speed
technology
tool
work
worker
working
workplace
workshop