機器
agriculture
automatic
background
blue
booster
centrifugal
closeup
construction
control
crop
device
electric
electrical
energy
engine
equipment
factory
fuel
gardening
industrial
industry
inverter
irrigate
irrigating
isolated
machinery
maintenance
manufacturing
metal
motor
object
pipe
plumbing
portable
power
pressure
pump
repair
selfpriming
sewage
steel
suction
surface
system
technology
tool
water
white
work