機器
business
chemistry
chimney
construction
dark
distillation
distillery
energy
engineering
environment
factory
fuel
gas
gasoline
global
heavy
industrial
industry
manufacturing
metal
natural
night
oil
petrochemical
petroleum
pipe
pipeline
piping
plant
platform
pollution
power
production
refine
refinery
sky
station
steel
storage
structure
sunrise
sunset
tank
technology
tower
tube
twilight
work
worker