機器
boss
business
caucasian
control
control cabinet
controller
direction
ear protector
energy
engineer
engineering
factory
helmet
hvac
improvement
industrial
industry
instructions
job
maintenance
male
man
management
manager
manufacture
meeting
occupation
operator
pipe
plant
production
profession
professional
protectiv
system
team
team play
teamwork
technical
technician
technology
two
white
work
worker
workman
workplace