discretenessn.不连续性；离散性discreteadj.不连续的；分离的discrete orthogonal moments离散正交矩discrete-time convolution离散时间卷积discrete literal expression离散直接量表达式discrete long line equation离散化长线方程discrete frequency spectrum离散频谱discrete additive valuation离散加法赋值discrete event system model离散事件系统模型discrete bit optical memory打点式光存储器,逐位式光存储器Discrete-ordinates method离散纵标方法discrete variational method离散变分法