機器
background
blue
boilerhouse
business
chemical
construction
control
energy
engineering
equipment
exploration
extraction
factory
fuel
gas
gasoline
generator
group
heater
industrial
industry
job
live
manufacturing
metal
natural
oil
oilfield
petrochemical
petroleum
pipe
pipeline
plant
power
pressure
production
pump
red
sky
station
steam
stress
technology
tube
turbine
valve
water
work
working