数字语音与数据并存
digital simultaneous voice and data
DSVD
衰减与串扰比
PACR:Attonuation to Crosstalk Ratio
衰减与频散
Attenuation and Frequency Dispersion
衰减与散射
Attenuation and scattering
双DSP数据采集与处理
data acquisition and processing with two DSPs
双闭环设计与实验
design & experiment of two closed loop
数字与缩微影像
digital & micrographic imaging
数字与模拟观测
digital and analogue observation