英文關鍵字
air
big
building
ceiling
circulation
clean
comfort
condition
conditioning
device
duct
ductwork
efficient
energy
engineering
equipment
factory
fresh
heating
house
hvac
hygiene
indoors
industrial
industry
interior
line
low
metal
metallic
modern
nobody
object
passive
pipe
pipeline
piping
production
recuperator
special
stainless
steel
supply
system
technology
thermal
tube
vent
ventilation
venting