機器
air
blades
conditioner
conditioning
cool
cooler
cooling
danger
detail
electric
electricity
environment
equipment
factory
fan
fresh
grate
horsepower
hot
industrial
industry
large
machinery
manufacture
mechanical
metal
modern
motor
move
over
plant
power
protection
red
rotate
rotating
rotor
round
side by side
steel
strong
system
technology
turbine
two
ventilate
ventilation
ventilator
wind