機器
air
boiler
building
chemistry
chiller
cold
condenser
conditioning
construction
control
control room
cooler
cooling
engineer
engineering
equipment
factory
heat
helmet
industrial
industry
maintenance
management
manufacturing
mechanical
people
pipeline
piping
plant
pressure
production
professional
pump
refinery
repairman
room
safety
service
steam
system
technician
technology
treatment
tube
valve
water
water chiller
worker
workers
定額
Maintenance technician at a heating plant,Petrochemical workers supervise the operation of gas and oil pipelines in the factory,Engineers put hearing protector At room with many pipesの素材 [FY310221482745]
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