辐射散射

radiation scattering

old variant of 射[she4]

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

variant of 散[san4]

scattered / loose / to come loose / to fall apart / leisurely / powdered medicine

to scatter / to break up (a meeting etc) / to disperse / to disseminate / to dispel / (coll.) to sack

radiation

scattering

(physics) to scatter

spoke of a wheel