英文關鍵字
air
background
big
blades
chill
control
cool
cooler
cooling
device
distribution
electric
electricity
energy
equipment
fan
gear
grey
heat
high
industrial
industry
infrastructure
interior
large
load
low
machine
machinery
medium
modern
network
power
production
pump
round
station
steel
system
tank
transformer
turbine
volt
voltage