英文關鍵字
black
book
business
chain
color
commercial
concept
conceptual
controls
design
draws
engineering
equipment
gears
industrial
industry
information
ink
issue
jobbing
journal
machine
magazine
many
mechanic
media
newspaper
nobody
offset
paper
plant
power
press
printer
printery
printing
production
professional
publish
quality
rolled
sheet
single
speed
sprocket
technology
tools
vacuum
work