英文關鍵字
air
belt
business
cold
colors
conditioning
conveyor
copies
culture
diffusion
duct
ducting
ductwork
employment
extractor
factory
flow
food
heat
hvac
industrial
industry
interior
line
manufacture
modern
paper
people
pipe
pipeline
plant
premises
process
processing
production
products
storage
system
technology
tube
ventilation
work
worker
workshop