機器
assistant
caucasian
concentration
construction
employee
engine
engineer
engineering
ethnicity
examining
expertise
factory
hardhat
helmet
indoors
industrial
industry
job
labor
machinery
maintenance
manual worker
manufacturing
mechanic
mechanical
metalworking
occupation
operating
preparation
process
production
production line
professional
repairing
repairman
safety
service
technician
technology
tool
train
two people
uniform
warehouse
worker
working
workplace
workshop
wrench
定額
Industrial workers are working in the factory. Machine engineers or mechanical technicians and assistants are helping to repair and inspect the machine's readiness before the product is manufactured.の素材 [FY310170473803]
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