機器
appliance
blue
brass
business
cast iron
centrifugal
closeup
construction
control
designed
device
electric
electric motor
electrical
engine
engineering
equipment
factory
gardening
industrial
industry
irrigate
irrigating
isolated
liquids
machinery
mechanical
metal
motor
object
pipe
pipeline
portable
power
pressure
pump
pumping
smallsized
suck
supply
technology
tool
valve
vortex
water
water pump
water supply
white background
without abrasive contaminants