Data communication systems that employ modulation techniques requiring good low-frequencyresponse place unique demands on PLL-based frequency synthesizers.
使用调制技术的数据通信系统需要良好的低频响应，是对基于PLL频率合成器的数据通信系统的重要要求。
2
The SI-18BX is a straight forward, no nonsense 18-inch bass reflex subwoofer with exceptional lowfrequencyresponse.
在许仕18 BX是一个简单的，没有废话18英寸低音出色的低反射低音频率响应。
3
It can reach control object quickly without vibration, so is extremely suitable for industrial control such as machine tool of lowfrequencyresponse.