外照射

external irradiation

outside / in addition / foreign / external

variant of 照[zhao4] / to shine / to illuminate

according to / in accordance with / to shine / to illuminate / to reflect / to look at (one's reflection) / to take (a photo) / photo / as requested / as before

to shine on / to light up / to irradiate

old variant of 射[she4]

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