電離輻射

ionization radiation / nuclear radiation

lightning / electricity / electric (bound form) / to get (or give) an electric shock / phone call or telegram etc / to send via telephone or telegram etc

ion / ionized (e.g. gas)

surname Li

to leave / to part from / to be away from / (in giving distances) from / without (sth) / independent of / one of the Eight Trigrams 八卦[ba1 gua4], symbolizing fire / ☲

spoke of a wheel

radiation

old variant of 射[she4]

to shoot / to launch / to allude to / radio- (chemistry)