英文關鍵字
assembling
assembly
billet
business
components
craftsman
detail
employee
equipment
factory
gloves
hand
heavy
human
industrial
industry
job
labor
laborer
labourer
making
man
manpower
manual
manufacture
manufacturing
mechanical
mechanician
metal
metalwork
operator
parts
people
plant
processing
production
professional
skill
steel
technical
tool
unit
work
worker
working
workplace
workshop