機器
background
business
connector
construction
control
ecology
economy
energy
environmental threat
equipment
facility
field
finance
flange
flow
fossil
fuel
gas
gasoline
generation
head
industrial
industry
installation
natural
nature
oil
oil industry
oil valve
oil well
pipe
pipeline
pollution
power
power generation
production
pump
pump unit
regulator
resource
supply
technology
tool
unit
valve
water
well
wellhead
work