To minimize the frequency and phase distortion in a DTV transmitter in order to achieve best VSB frequency performance, a pre equalizer can be inserted into the modulator.
为了补偿数字电视发射机的频谱畸变与相位失真，以得到最佳的VSB频谱特性，可以在调制器中加入预均衡网络对频谱进行预畸变。
In high power laser system, a small size phase-distortion wavefront measure is necessary to compensate and control the wavefront of laser beam with intermediate frequency.
在高功率激光系统，激光束小尺度相位畸变波前探测是实现激光束中频段波前补偿与控制的重要前提。
The L3 features a linear phase crossover which doesn't introduce phase distortion between the frequency bands. The crossover points are selectable by the user.
L3特有的线性相位交点可以保证在常用波段之间不产生失真，而交点是由用户选定的。
The L3 features a linear phase crossover which doesn't introduce phase distortion between the frequency bands. The crossover points are selectable by the user.
L3特有的线性相位交点可以保证在常用波段之间不产生失真，而交点是由用户选定的。
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