radiography

n [U] production of X-ray photographs X射线照相（术）.

radii, radio, radio astronomer, radio astronomy, radio car, radio cab, radio frequency, radio telescope, radio transmitter, radio-, radio-astronomer, radio-carbon, radio-controlled, radio-frequency, radio-therapist, radio-therapy, radioactive, radioactivity, radiogram, radiograph, radiographer, radioisotope, radiologist, radiology, radish, radium, radius, radon, RAF, raffia, raffish, raffishly, raffishness, raffle, raft, rafter, raftered, rag, rag-and-bone man, rag-bag, ragamuffin,