Abstract : This Chinese translation is of three articles from 'Aerospace Knowledge Magazine'. The articles are 'Su-7 and Su-17' about the Soviet fighter bomber and the variable geometry swept-wing fighter bomber; 'Infrared Decoy' about the scapegoat infrared countermeasure against infrared guided missiles. Smoke and flame decoys, composite decoys and fuel type decoys are also discussed in this article. The last article is entitled 'Distinguishing between several Soviet aircraft'.