英文關鍵字
alarm
alert
atom
atomic
attention
badge
biological
caesium
caution
chemical
contaminate
contaminated
danger
deterrent
disaster
ecology
element
emanation
energy
fission
fusion
hazard
irradiation
nuclear
nuke
physics
pictogram
plutonium
pollutant
pollution
power
radiation
radioactive
radioactivity
ray
reactor
recycling
research
roentgen
safety
science
set
sign
threat
toxic
uranium
warn
warning
yellow