機器
air
borehole
bucket
classic
compressor
construction
deep
diesel
drinking
electric
electronic
engine
equipment
exchanger
expansion
farm
flat
garden
gauge
heat
icon
industrial
industry
machinery
motor
pipe
pipeline
plant
plumbing
power
pump
scheme
sewage
station
submersible
supply
system
tank
tap
temperature
thermal
treatment
turbine
valve
village
water