signal modulation

• 信号调制

signal modulation的用法和样例：

例句

1. Operating in the heavy congested SW band,it is difficult for HFradars to find continuously useable waveband for signal modulation.
   高频雷达工作在十分拥挤的短波波段内，可资用的能满足信号调制的连续频带很难获得。