機器
background
built
business
chemical
construction
control
design
energy
engineering
equipment
factory
fuel
gas
gas explosion
gasoline
generation
heat
industrial
industry
insulation
liquefied
manufacturing
metal
natural
object
old
pipe
pipeline
plumbing
power
pressure
processing
production
pump
refinery
screw
security
service
silver
steam
steel
supply
system
technology
tube
valve
vessel