機器
architect
asian
business
construction
control
development
engineer
engineering
equipment
expertise
factory
hard hat
heavy
helmet
industrial
industry
inspector
job
logistic
maintenance
male
man
manager
manufacturing
mechanic
men at work
metal
occupation
operator
people
plant
production
professional
quality
safety
service
skill
standing
steel
technician
technology
uniform
warehouse
work
working man
workplace
workshop
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