“accelerator”的概念、定义、翻译、参考文献-科学参考

accelerator

Physics

An apparatus for increasing the kinetic energies of charged particles. Particle accelerators are used extensively in both nuclear physics, to investigate nuclear reactions, and particle physics, to search for new particles. These are two types: linear accelerators and cyclic accelerators. See cyclotron; linear accelerator; synchrocyclotron; synchrotron.

http://www-elsa.physik.uni-bonn.de/accelerator_list.html A list of world particle accelerators and accelerator laboratories, with links, from the ELSA website at the University of Bonn

Chemistry

A substance that increases the rate of a chemical reaction, i.e. a catalyst.

Chemical Engineering

A substance that alters the rate of a chemical reaction such as a catalyst.

Electronics and Electrical Engineering

A machine used to accelerate charged particles or ions in an electric field in order to produce high-energy beams for the study of nuclear structure and reactions. Magnetic fields are used to focus and determine the direction of the beam. Very high energies are achieved using machines in which the beams of particles are subjected to a series of relatively small accelerating voltages. See linear accelerator; synchrotron.

Geography

A factor which increases the momentum of a boom or slump in an economy, so that a small change in demand, for example, may lead to a greater industrial growth (or decline).
http://www.growthaccelerator.com/blog/regional-growth-hotspots/ Has an interesting map of growth acceleration in Britain.

Economics

A model relating investment to changes in output. The accelerator model asserts that firms invest more when output is rising and less when it is falling. The argument behind this assertion is that a rise in demand leads some firms to produce more and leads them, and other firms, to expect that demand will rise further. The rise in output raises the ratio of output to capacity, and the expectation of further rises in demand makes firms believe it would be profitable to have more capital equipment. Accelerator-type models help explain empirically observed variations in both fixed investment and investment in stocks and work in progress.

单词	accelerator
释义	accelerator Physics An apparatus for increasing the kinetic energies of charged particles. Particle accelerators are used extensively in both nuclear physics, to investigate nuclear reactions, and particle physics, to search for new particles. These are two types: linear accelerators and cyclic accelerators. See cyclotron; linear accelerator; synchrocyclotron; synchrotron. http://www-elsa.physik.uni-bonn.de/accelerator_list.html A list of world particle accelerators and accelerator laboratories, with links, from the ELSA website at the University of Bonn Chemistry A substance that increases the rate of a chemical reaction, i.e. a catalyst. Chemical Engineering A substance that alters the rate of a chemical reaction such as a catalyst. Electronics and Electrical Engineering A machine used to accelerate charged particles or ions in an electric field in order to produce high-energy beams for the study of nuclear structure and reactions. Magnetic fields are used to focus and determine the direction of the beam. Very high energies are achieved using machines in which the beams of particles are subjected to a series of relatively small accelerating voltages. See linear accelerator; synchrotron. Geography A factor which increases the momentum of a boom or slump in an economy, so that a small change in demand, for example, may lead to a greater industrial growth (or decline). http://www.growthaccelerator.com/blog/regional-growth-hotspots/ Has an interesting map of growth acceleration in Britain. Economics A model relating investment to changes in output. The accelerator model asserts that firms invest more when output is rising and less when it is falling. The argument behind this assertion is that a rise in demand leads some firms to produce more and leads them, and other firms, to expect that demand will rise further. The rise in output raises the ratio of output to capacity, and the expectation of further rises in demand makes firms believe it would be profitable to have more capital equipment. Accelerator-type models help explain empirically observed variations in both fixed investment and investment in stocks and work in progress.
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