機器
alternative
atom
banner
blur
building
business
chemical
china
collection
construction
droplet
ecology
economic
electricity
energy
engineering
equipment
factory
flare
flash
fuel
galaxy
gas
gear
glittery
icon
illuminated
illustration
industrial
industry
innovation
manufacture
manufacturing
nuclear
oil
petrol
plant
pollution
power
recycling
refinery
set
silhouette
space
supply
symbol
technology
wind
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