“trough”的概念、定义、翻译、参考文献-科学参考

trough

Geology and Earth Sciences

1. An extension of low atmospheric pressure from the central regions of a low-pressure system into a zone where generally higher pressure prevails. The term ‘trough’ is also, and in accordance with this definition, applied to equatorward meanders of the flow of the upper westerly winds over middle latitudes. (The ‘equatorial trough’, where trade winds meet, is synonymous with the ‘intertropical convergence zone’.) See also long wave.
2. The lowest point of a fold surface.

Economics

The lowest period for real incomes or activity in a business cycle. In a severe cycle the trough may be a minimum in absolute terms. In a mild cycle in an economy with a positive trend rate of growth of output, the trough may be a minimum relative to trend rather than in absolute terms.

单词	trough
释义	trough Geology and Earth Sciences 1. An extension of low atmospheric pressure from the central regions of a low-pressure system into a zone where generally higher pressure prevails. The term ‘trough’ is also, and in accordance with this definition, applied to equatorward meanders of the flow of the upper westerly winds over middle latitudes. (The ‘equatorial trough’, where trade winds meet, is synonymous with the ‘intertropical convergence zone’.) See also long wave. 2. The lowest point of a fold surface. Economics The lowest period for real incomes or activity in a business cycle. In a severe cycle the trough may be a minimum in absolute terms. In a mild cycle in an economy with a positive trend rate of growth of output, the trough may be a minimum relative to trend rather than in absolute terms.
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