英文關鍵字
assembly
batting
bending
close
copper
cutting
factory
faltsprokatny
fold
folding
funnel
future
galvanized
hammer
handmade
hands
hobby
knee
labor
lock
machine
mallet
manual
manufacture
master
metal
metallurgy
object
own
part
place
pneumatic
pro
process
processing
product
production
profession
professional
roll
rolling
rolls
roof
roofer
scissors
sheet
steel
tin
tinker
tinsmith
ventilation
ventilator
video
work
worker
working
workshop
your
zinc