辐射防护

radiant【核】;radiation source【核】;source of radiation【核】

radiation hydrogeology【地质】;radioactive hydrogeology【地质】;radiohydrogeology【地质】

ionizing radiation

direct radiation type loudspeaker

REMCAL(radiation equivalent manikin calibration)

radiation myelitis

radiation biology

laser【激光】;light amplification by stimulated emission of radiation【激光】;optical maser【激光】