conventional tractor
71List of retronyms — This is a list of retronyms, which are terms renamed after something similar but newer has come into being.NounsA B; Acoustic guitar : Before the invention of the solid body electric guitar, all guitars amplified the sound of a plucked string… …
72Autonomous building — An autonomous building is a building designed to be operated independently from infrastructural support services such as the electric power grid, municipal water systems, sewage treatment systems, storm drains, communication services, and in some …
73Russia — /rush euh/, n. 1. Also called Russian Empire. Russian, Rossiya. a former empire in E Europe and N and W Asia: overthrown by the Russian Revolution 1917. Cap.: St. Petersburg (1703 1917). 2. See Union of Soviet Socialist Republics. 3. See Russian… …
74Architecture and Civil Engineering — ▪ 2009 Introduction Architecture For Notable Civil Engineering Projects in work or completed in 2008, see Table (Notable Civil Engineering Projects (in work or completed, 2008)). Beijing was the centre of the world of architecture… …
75aerospace industry — Introduction assemblage of manufacturing concerns that deal with vehicular flight within and beyond the Earth s atmosphere. (The term aerospace is derived from the words aeronautics and spaceflight.) The aerospace industry is engaged in the …
76Miniature UAV — An EMT Aladin of the German Army A miniature UAV or Small UAV (SUAV),[1] is an unmanned aerial vehicle small enough to be man portable. Miniature UAVs range from micro air vehicles (MAVs) that can be carried by an infantryman, to man portable… …
77High Mobility Multipurpose Wheeled Vehicle — This article refers to the Military HMMWV, not the civilian Hummer sold by General Motors Infobox Automobile caption=U.S. Marine HMMWV in difficult terrain in Afghanistan name=High Mobility Multipurpose Wheeled Vehicle (Humvee) manufacturer=AM… …
78Self-propelled artillery — British AS 90s firing in Basra, Iraq, 2006 …
79Propfan — NASA / GE Unducted Fan A propfan was first defined as a small diameter, highly loaded multiple bladed variable pitch propulsor having swept blades with thin advanced airfoil sections, integrated with a nacelle contoured to retard the airflow… …
80Freewheel — For information about the bicycle component, see Cogset. Freewheel mechanism …
