機器
agriculture
automatic
blue
business
chemical
chemistry
compressor
construction
curve
derrick
distribution
drill
drilling
energy
engineering
exploration
factory
fittings
fuel
fumes
gas
gasoline
generation
heat
industrial
industry
installation
iron
lublin
mast
mechanical
metal
metallic
mining
naphtha
natural
nature
oil
oilfield
outdoors
petrochemical
petroleum
pipe
pipeline
pipes
piping
plant
platform
power
process
production
pump
refinery
resource
rig
rural
rust
shale
shiny
silver
stacking
stainless
steel
system
technology
thermostat
tube
usa
valves
white
work
working