英文關鍵字
assemblage
assemble
assembling
assembly
billet
clamping
detail
enterprise
equipment
factory
gun
hand
holding
human
impact
industrial
industry
labor
manual
manufacture
manufacturing
mechanic
mechanical
mechanician
metal
metallic
nut
people
plant
pneumatic
professional
tighten
tightening
tool
unit
using
work
worker
working
workshop
wrench