描述了两个控制系统间的输出反馈相似的概念。

The output feedback similarity between two control systems is described.

youdao

跟退化结构相似的概念还有返祖现象，它的意思是生物体身上重新出现直系祖先没有的结构或特征。

Similar in concept to vestigial structures are atavisms, which are the reappearance of a structure or trait that isn't found in the immediate ancestors.

youdao

它提供了模型化的框架，能够让开发人员为数据库架构定义一个与真实世界信息相似的概念化的模型。

This provides a modeling framework that enables developers to define a conceptual model of a database schema that closely aligns to a real world view of the information.

youdao

And this is called photoelectron spectroscopy, and essentially what it is is very similar conceptually to what we were talking about way back in the first couple lectures when we were talking about the photoelectric effect.

也就是光电子能谱，从本质上来讲,这项技术,与我们在最开始的几节课上讲的,光电效应在概念上非常相似。

麻省理工公开课 - 化学原理课程节选