highest efficiency
121Economy of Mexico — Going clockwise and starting from the upper left image: Port of Veracruz, Puerta de Hierro in Guadalajara Business District, Mastretta MXT automobile by Mexican automaker Mastretta, Pemex Oil platform in the …
1221970s — 70s redirects here. For decades comprising years 70–79 of other centuries, see List of decades …
123Wind turbine — Offshore wind farm using 5MW turbines REpower 5M in the North Sea off Belgium This article discusses wind powered electrical generators. See windmill for wind powered machinery used to grind grain or pump water. A wind turbine is a device that… …
124Economics of global warming — This article describes the economics of global warming and climate change. Contents 1 Definitions 2 Climate change science 3 Scenarios 4 Trends and projections …
125Cylinder head porting — refers to the process of modifying the intake and exhaust ports of an internal combustion engine to improve the quality and quantity of the air flow. Cylinder heads, as manufactured, are usually suboptimal due to design and manufacturing… …
126international relations — a branch of political science dealing with the relations between nations. [1970 75] * * * Study of the relations of states with each other and with international organizations and certain subnational entities (e.g., bureaucracies and political… …
127river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… …
128Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …
