一、Homogeneous And Heterogeneous 托福听力原文： NARRATOR: Listen to part of a lecture in a chemistry class. MALE PROFESSOR: So, just to sum up, matter is anything that has mass and volume, right? Anything ...

Back in 2001, I wrote a column about the merits of using heterogeneous designs for signal processing-oriented applications. My argument went like this: Signal-processing applications typically ...