機器
aluminium
black
blue
boiler
business
chemical
chemistry
chimney
color
construction
dark
distillery
drain
drainage
duct
energy
engine
engineer
engineering
environment
equipment
factory
fitting
flange
fluid
foil
fuel
gas
gasoline
global
heat
heavy
hot
industrial
industry
insualtion
insulation
light
machinery
manufacturing
material
metal
mill
netflow
night
nobody
oil
old
paper industry
petrochemical
petroleum
pharmaceutical
pipe
pipeline
piping
plant
plumbing
pollution
power
producing
production
refinery
rusty
sewage
sewer
sky
solenoid
stainless
station
steam
steel
storage
structure
sunset
supply
tank
technology
tower
toxic
treatment
tube
utility
valve
water
white