deg.ra.da.tion
n.（名词）The act or process of degrading.降级，降等：降低或下降的过程The state of being degraded; degeneration.降低，堕落：被降低的状态；衰退A decline to a lower condition, quality, or level.退化：下降到低等的状况、性质或水平Geology A general lowering of the earth`s surface by erosion or weathering.【地质学】 陵削：由于侵蚀或风吹的原因，陆地表面的全面下降Chemistry Decomposition of a compound by stages, exhibiting well-defined intermediate products.【化学】 降解，递降分解：化合物的递降分解，显示出清楚明白的中间生成物Computer Science The state in which a computer operates when some of its memory or peripherals are not available.【计算机科学】 降级：计算机在其储存器或周边设备不能使用时继续运转的状态
