具体实现中对基本信号（base signal）采用高保护级，而对增强信号(enhanced signal)采用一般保护级，这样可以实现SDTV和HDTV电视信号的分层传输。
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Signal Enhanced Extent 信号增强幅度
Early Signal Enhanced Extent 强化早期信号增强幅度 ; 早期信号增强幅度
signal enhanced 信号增强
signal enhanced technology 信号增强技术
enhanced process for weak signal 弱信息增强处理
varisource signal enhanced seismic system 可控震源信号增强型数字地震仪
digital pulse signal enhanced-transmission 数字脉冲信号增强传输
In any case, always short wavelength signal attenuation by this process, enhanced long-wavelength signal.
在任何情况下，短波长的信号总是被这种过程所衰减，同时长波长信号得到增强。
Using the optical temperature control accessory, silica peak height signal was enhanced doubly, reducing atomization time, extending useful time of graphite tube.
利用光学温度控制器使测量硅的峰高信号增强一倍，试验了时间常数、载气流量、常用酸和盐对测硅灵敏度的影响；
The improved smooth algorithm based on the characteristic sub-space used deepen the null to fall the depth, enhanced the system's signal to noise ratio.
研究了改进的基于特征子空间的平滑算法，加深了零陷深度，提高了系统的信噪比。
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