- 行业: Printing & publishing
- Number of terms: 178089
- Number of blossaries: 0
- Company Profile:
McGraw Hill Financial, Inc. is an American publicly traded corporation headquartered in Rockefeller Center in New York City. Its primary areas of business are financial, publishing, and business services.
The Antarctic Circle is an imaginary line that delimits the northern boundary of Antarctica. It is a distinctive parallel of latitude at approximately 66<sup>°</sup>30<sup>′</sup> south. Thus it is located about 4590 mi (7345 km) south of the Equator and about 1630 mi (2620 km) north of the south geographic pole.
Industry:Science
Subjecting a complete aircraft or its components (such as wings, engines, or electronics systems) to simulated or actual flight conditions in order to measure and record physical phenomena that indicate operating characteristics. Testing is essential to the design, development, and acceptance of any new aircraft.
Industry:Science
The global mining industry is experiencing substantial technological advancement as well as productivity gains. Reported gains and expected benefits include increased safety, increased equipment use, improved mine cash flow, more effective maintenance, more effective time management, and improved throughput times.
Industry:Science
The Crab Nebula is the remnant of a powerful supernova explosion that blew apart a giant star and was seen by Chinese astronomers in 1054. It has been intensively studied for many years, most recently through time-lapse observations made with both the Hubble Space Telescope and the <i>Chandra X-ray Observatory</i>.
Industry:Science
The application of engineering concepts and principles to the conversion of raw foods into safe consumer products of the highest possible quality. The entire spectrum of food engineering is associated with operation and maintenance of food processing plants as well as sophisticated research involving process design.
Industry:Science
The cross section of a body that is placed in an airstream in order to produce a useful aerodynamic force in the most efficient manner possible. The cross sections of wings, propeller blades, windmill blades, compressor and turbine blades in a jet engine, and hydrofoils on a high-speed ship are examples of airfoils.
Industry:Science
The application of scientific principles and engineering techniques to flight in space. Astronautics deals with space vehicles in the sense that aeronautics deals with aircraft. A distinguishing feature between astronautics and aeronautics is the extent to which the vehicles are influenced by the Earth's atmosphere.
Industry:Science
The Greenspan acoustic viscometer, first investigated by M. Greenspan and F. N. Wimenitz in 1953, is a relatively compact and robust device for measuring the viscosity of gases using the principles of acoustic resonance. The viscometer was further developed both experimentally and theoretically during the past decade.
Industry:Science
The branch of physics that studies the dynamics of naturally occurring large-scale flows in both the atmosphere and oceans. Examples of such flows are weather patterns, atmospheric fronts, the Gulf Stream, coastal upwelling, and El Niño. The fluids are either air or water in a moderate range of temperatures and pressures.
Industry:Science
The center of pressure for an object is defined as the point at which the resultant surface pressure force may act and produce the same moment (torque) as the actual distributed pressure force on the object. The center of pressure is a very useful concept for simplifying the effects of fluid forces acting on a solid object.
Industry:Science
