機器
action
aeration
aerator
air
alternative
aquatic
asia
background
blade
electric
electricity
energy
environment
environmental
equipment
farm
farming
fish
flow
generate
generator
increase
industrial
industry
lake
metal
natural
nature
outdoor
oxygen
pollution
power
propeller
recycle
renewable
rotate
rotation
shrimp
sustainable
technology
thai
treatment
turbine
waste
water
watts
wheel
white
wind