機器
amps
arrow
background
batch
board
buzzer
cables
caution
conductors
country
current
danger
dangerous
death
distribution
electric
electrical
electricity
energy
farm
fence
hazard
hazardous
hdr
high
icon
industrial
industry
life
lightning
metal
old
power
powerlines
precaution
red
risk
safety
sign
signal
sky
supply
technology
tension
triangle
voltage
warning
yellow