機器
build
cable
circuit
clamp
conductor
connect
connection
connector
copper
current
danger
earth
electric
electrical
electricity
electronic
energy
engineering
equipment
fighter
flame
ground
grounding
industrial
industry
iron
isolated
lightning
maintenance
metal
plug
power
protection
repair
safety
service
shock
supply
system
teamwork
technology
tool
voltage
welder
welding
white
wire
work
worker