discrete map离散映射discreteadj.不连续的；分离的discretely controllable离散可控discrete Fourier series离散级数discrete component part分立元件discrete microcomponent分立微型元件discrete time parameter离散时间参数discrete Markov process离散马尔可夫过程discrete-time signals时域离散信号discrete material piles散体材料桩discrete false-target离散伪目标discrete-time process离散时间过程