aluminum
アルミニウム
air
airconditioning
area
building
ceiling
cold
conditioning
construction
cool
cooling
engineering
flexible
hands
hvac
indoors
industrial
installation
installing
male
man
men
metal
metalic
modern
new
pipeline
pipes
shaft
system
technology
temperature
tube
tubing
unites
ventilate
ventilated
ventilation
wind
worker