機器
board
cable
check
circuit
computer
construction
control
crew
current
electrical
electrician
engineer
equipment
factory
field
fuse
helmet
industry
inspect
installing
job
maintenance
man
manufacturing
men at work
mounting
panel
plant
power
production
professional
protection
relay
repairing
repairman
safety
service
substation
switch
system
technician
technology
tool
unit
voltage
voltmeter
wiring
work
定額
professional technician engineer working to control electrical power and safety service system, electrician working to maintenance and checking industrial equipment in term of factory technologyの素材 [FY310191996841]
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