英文關鍵字
air
angle
black
circulation
closeup
cold
comfort
condensing
condition
control
cool
cooler
cooling
system
design
detail
electric
electrical
energy
engineering
equipment
factory
fan
fans
grille
heat
hot
industrial
industry
low
machine
machinery
manufacturing
metal
old
panel
perspective
production
roof
rusty
technology
temperature
unit
ventilation
video
vintage
weathered
white
workshop