機器
balance weight
bunded
burner
carbon
carving
construction
counterbalance
electric motor
electrocable painted
engineering
equipment
ergal
facility
factory
flanges
fuel
gas
gate
hairpins
industrial
industry
installation
manifold
manometer
metal
motor
nuts
oil
oil field
oil well
paronite
pipe
pipeline
pollution
power
pressure
pump
pumping
red
reducer
refinery
regulator
rocking chair machine
rod
stainless
technology
throttle
tightness
valve