英文關鍵字
abrasive
alloy
automation
bore
boring
carbide
chuck
cutter
cutting
detail
drill
engineering
equipment
factory
form
hardness
industrial
industry
instrument
lathe
machine
machining
manufacture
manufacturing
material
metal
mill
modern
part
precision
process
processing
production
professional
propulsion
rotation
shaft
shaping
shaving
stainless
steel
technique
technology
thread
tool
tooling
turning
work
workshop