alternative
building
clean
climate
earth
ecology
efficiency
electric
electricity
emissions
energy
environment
equipment
factory
generator
geothermal
green
heat
heating
hot
industrial
industry
landscape
natural
nature
nobody
perspective
pipe
pipeline
plant
pollution
power
pressure
production
renewable
saving
station
steam
structure
supply
technology
temperature
thermal
transfer
turbine
wairakei
warm
warming
water
定額
Geothermal energy concept. Eco friendly geothermal energy generation power plant. Green generating industry. Vector illustration.の素材 [FY31089979211]
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