英文關鍵字
adjustable
bolt
boots
close
construction
dirt
dust
equipment
fastener
fastening
fix
fixture
glove
hand
human
industrial
industry
iron
job
key
manual
metal
nut
object
objects
part
power
production
protection
repair
repairing
service
shoes
spanner
steel
storage
technology
thread
threaded
tighten
tool
torsion
twist
work
worker
working
wrench
wring