英文關鍵字
accuracy
bench
bore
chuck
closeup
craft
craftsman
detail
device
dirty
drill
drilling
employee
engineering
equipment
factory
hand
handle
hole
industry
instrument
lathe
machine
machinery
male
man
manufacture
mechanic
mechanism
metal
metalwork
metalworker
milling
occupation
old
operate
precision
press
pressure
processing
production
professional
steel
technician
technology
tool
turning
work
worker
workshop