機器
assembly
automated
automation
background
belt
business
centrifugal
chemical
clean
compressor
construction
electrical
electricity
energy
engine
engineering
equipment
factory
gas
generator
industrial
industry
installation
line
machinery
manufacture
manufacturing
mechanic
metal
motor
nobody
pipe
pipeline
piping
plant
plumbing
power
pressure
production
pump
refinery
stainless
steel
system
technology
tube
valve
work