automatic tandem working
21airplane — /air playn /, n. 1. a heavier than air aircraft kept aloft by the upward thrust exerted by the passing air on its fixed wings and driven by propellers, jet propulsion, etc. 2. any similar heavier than air aircraft, as a glider or helicopter. Also …
22publishing, history of — Introduction an account of the selection, preparation, and marketing of printed matter from its origins in ancient times to the present. The activity has grown from small beginnings into a vast and complex industry responsible for the… …
23Defence Research and Development Organisation — Sanskrit: बलस्य मूलं विज्ञानम् Strength s Origin is in Science [1] Agency overvi …
24Flying car (aircraft) — For other uses, see: Flying car. For non real (fictional) flying cars, see: Flying car (fiction). Moller Skycar M400 to the right, next to older Moller models …
25motion-picture technology — Introduction the means for the production and showing of motion pictures. It includes not only the motion picture camera and projector but also such technologies as those involved in recording sound, in editing both picture and sound, in… …
26Perl — This article is about the programming language. For other uses, see Perl (disambiguation). Perl Paradig …
27Director telephone system — The Director System was a system which made it possible to call subscribers at other telephone exchanges without operator intervention in large multi exchange cities, and to have a mixture of automatic and manual exchanges within these cities. It …
28Boeing AH-64 Apache — AH 64 Apache An AH 64D Apache from U.S. Army s 101st Aviation R …
29PT-76 — Infobox Weapon|is vehicle=yes name=PT 76 caption=PT 76 on display near the Museum of the Great Patriotic War, Kiev. type=Amphibious Light Tank origin=flagcountry|Soviet Union service=16 August 1952 present used by=See Operators wars=See Combat… …
30Alternate reality game — This article is about the genre. For the specific 1980s series, see Alternate Reality (computer game). An alternate reality game (ARG) is an interactive narrative that uses the real world as a platform, often involving multiple media and game… …
