The theory of the term structure is the theory of how interest rates differ according to maturity or term.

利率期限结构理论就是,怎样由不同的期限,产生不同的利率

耶鲁公开课 - 金融市场课程节选

So, I've got here a term structure; well, the term structure is the plot of yield-to-maturity against time-to-maturity.

我这有一张期限结构图,期限结构其实是,到期收益率与到期期限之间的关系图

耶鲁公开课 - 金融市场课程节选