watermarking

例句:

• Synchronization is an important problem of digital audio watermarking.
  同步性是数字音频水印的一个重要问题.
  
• The merchant bought a machine for watermarking his products.
  这个商人买了一台机器用于给产品印上水印.
  
• An audio watermarking scheme based on auditory model is presented.
  提出了一种基于听觉感知模型的自适应音频数字水印算法.
  
• There's more information on audio watermarking and one of our early pilots in the R blog.
  来自BBC