Reflection spectrum, group time delay and group time delay ripple are analyzed by the method of transformation matrix.

用传输矩阵法分析反射谱、时延曲线和群时延抖动。

youdao

The characteristics of frequency correlation and group time delay of ambient noise and ship radiated noise in the sea are studied.

本文研究海洋环境噪声与舰船噪声的频间相关与群延迟特性。

youdao

We can obtain much higher birefringence and larger difference of group time delay by choosing different structure parameter of fibers.

改变光子晶体光纤的结构参数，将获得更高的双折射和更大的群时延差。

youdao

The group says less time passes for an earthquake shock wave to reach a measuring instrument than in the past.

VOA: special.2009.03.17

So when we talk about a cohort study, this means taking a group of people and following them over time.

所以当我们提到定群研究,就意味着,有一群人参加实验并需一直追踪下去

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

The source doesn't tell us that, and in fact there's really no archeological evidence of a group, a large group, entering the land of Canaan at this time.

资料来源并没有告诉我们，事实上，并没有考古学证据表明,有一个部族，大部族在那个时候进入迦南。

耶鲁公开课 - 旧约导论课程节选

He was the Oregon Symphony's music director from 1980 until 2003, transforming it from a small, part-time group into a full-time nationally recognized orchestra with 17 recordings.

WSJ: Conductor, Juilliard emeritus James DePreist dies

First, full-time workers in the 18-23 age group generally earn several times more than full-time students in that age group, who work part-time or during vacations.

FORBES: Americans Need More Work And Less College

It is rushing to reinvent itself as an express, logistics and financial group in time for a stockmarket flotation in October 2000.

ECONOMIST: Post offices