英文關鍵字
accuracy
adjusting
advancing
black
botswana
clamp
concept
cutter
cutters
cutting
detail
drill
engineering
equipment
factory
filings
glove
handle
industrial
industry
lathe
machine
machinery
machining
male
man
manual
manufacturing
mechanic
metal
milling
person
plant
process
production
repair
rotation
steel
swarf
system
technician
tolerances
tool
turning
unrecognizable
vertical
worker
workshop