超音波法液位元元元元元元测定
ultra-sonic method of liquid meaduremert
CDMA通信信号
CDMA communication signal
常规通信信号
general communication signals
超宽带通信信号
ultra-wideband communication signals
大信号信躁比
signal-to-noise ratio of strong signal
短波自适应通信信号
HF adaptive radio communication signal
二元信号转导系统
two-component signal transduction system
服务计算机发信号信道
service computer signaling channel
改良双二元信号法
modified doubinary signaling