数字通信中通常指传输速率低于64千比特/秒的网络接入方式narrowband

• 众所周知，电信业发展的总体趋势是，从有线到无线，从窄带到宽带，从语音业务到数据业务。

  Everybody is aware that the general trends in the development of the telecommunications industry are the move from wired to wireless, from narrowband to broadband, and from voice traffic to data traffic.

• 有研究显示，宽带用户比窄带用户更没有耐心。

  Research shows that broadband customers have less patience than narrowband customers.