英文關鍵字
belt
business
cardboard
clerical
company
conveyor
copy
cycle
design
device
digital
economy
engine
engineering
equipment
factory
fold
folding
green
hard
heavy
house
industrial
industry
ink
invention
layout
line
machine
machinery
mechanism
motion
off
operation
packaging
paint
panel
paper
patent
place
press
printer
printing
process
production
productivity
roller
rotating
round
running
set
sorting
spin
technology
turn
typography
typography18
typography19
work
workshop