幅度变化信号
amplitude change signalling
Signalling
amplitude change
命令信号后负变化
Postimperative negative variation
声信号强度变化
variation in sound signal strength
CDMA通信信号
CDMA communication signal
变化信息量
variational information quantity
变化信息提取
Change-information abstracting
image change detection
测试与信号变换处理
testing & signal transformation processing
常规通信信号
general communication signals
超宽带通信信号
ultra-wideband communication signals
催化信号放大
catalyzed signal amplification