The new status symbol of the country's affluent class is no longer jewelry, but expensive mobile phones, Ipods or designer labels.

VOA: standard.2009.09.19

We're used to thinking about sound being tranduced; being converted by acoustic waves into electrical signals that can be recognized by your iPods.

我们想想声音信号的转换过程,声音由声波转化为电子信号,你的iPod能够识别这种信号

耶鲁公开课 - 生物医学工程探索课程节选

We're used to thinking about sound being tranduced; being converted by acoustic waves into electrical signals that can be recognized by your iPods.

我们想想声音信号的转换过程,声音由声波转化为电子信号,你的iPod能够识别这种信号

耶鲁公开课 - 生物医学工程探索课程节选