機器
background
business
connector
control
economy
energy
equipment
facility
field
finance
flange
flow
fossil
gas
gasoline
generation
head
industry
natural
nature
oil
oil industry
oil well
petroleum
pipe
pipeline
power
power generation
production
pump
regulator
resource
rig
silhouette
sky
sunset
supply
technology
tool
unit
valve
water
well
wellhead
white
work