英文關鍵字
air
automated
bag
copper
engraving
equipment
factory
finished
hightech
image
industry
interior
laser
length
letter
machine
making
manufacture
manufacturing
marking
mechanical
nopeople
picture
pipe
pipeline
pipes
plastic
polymer
polymers
pressure
printer
process
producing
product
production
recycling
round
sign
steel
technology
text
tool
tubes
window
work
workman
workpiece