機器
alarm
alert
background
checking
chemical
connection
container
control
danger
emergency
equipment
extinguish
extinguisher
fighting
fire
fire extinguisher
firefighter
flame
foam
handle
hazard
heat
help
holding
industrial
industry
isolated
metal
object
office
panel
precaution
pressure
prevention
protection
pump
red
safety
security
service
system
technology
tool
wall
warning
water
work