The decrease in orbital altitude of an artificial satellite as a result of conditions such as atmospheric drag. 能量消减人造卫星由于大气阻力等的作用结果,在轨道高度上能量消减
A decrease in signal power as measured between two points. 信号能量在两点间测量出来的减小量。参阅signal。
There has been a steady decrease in population in this city. 这个城市的人口在持续下降。
A persistent decrease in the level of consumer prices or a persistent increase in the purchasing power of money because of a reduction in available currency and credit. 通货紧缩由于可获得货币和信贷的减少,导致消费品价格水平的持续下降或货币购买力的持续提高