discrete DCT离散DCT变换discreteadj.不连续的；分离的discrete wavelet transform离散小波变换discrete variable frequency离散变频discrete substitution group离散置换群discrete element simulation离散元模拟discrete wavelet transforms离散小波变换discrete-time observation离散观测Discrete Address Beacon SSR离散地址信标水面搜索雷达discrete-variable problem离散型问题discrete integrated circuit分立集成电路discrete stochastic process离散随机过程