機器
blue
boiler
bright
building
carbon
chemical
chemistry
day
distillation
distillery
drain
electric
electrical
electricity
energy
engineering
factory
gas
gasoline
generate
generator
industrial
industry
landscape
manufacture
manufacturer
manufacturing
oil
petrochemical
petrol
petroleum
pipe
pipeline
plant
pollution
power
processing
refine
refinery
smoke
steam
tank
technology
tube
vapor
vent
ventilation