英文關鍵字
abstract
art
boiler
bucket
business
chicken
chill
chiller
clean
compressor
control
cool
cooling
design
dirty
element
energy
engineering
factory
forklift
freeze
freshness
gas
generator
grunge
ice
icy
industrial
industry
interior
machine
machinery
maintenance
manufacturing
pipeline
power
pressure
production
professional
reduce
refresh
refrigeration
service
shiny
sparse
station
steel
stencil
storage
surface
system
temperature
tossed
unique
warehouse
water
weather
whole
work