The volume contains over 12,400 terms selected from sources published in Mainland China. The terms included relate not only to aeronautical engineering, general aviation, rocket engines, astronavigation, etc., but incorporate vocabulary from the basic sciences and the auxiliary technologies closely associated with aviation and space, such as, telecommunications, metallurgy, welding, aircraft construction, etc. The special features of the dictionary are Mainland Chinese practice in regard to: (1) terminology, (2) style of characters, (3) complete alphabetic lookup by means of the 'pinyin' spelling.