unit layer meaning in English

单元晶层

This thesis analyzes the component structure of learning space and presents three layers : unit layer , concept layer and entity layer
本文分析了学习空间的组成结构，提出了学习空间的三< wp = 5 >层结构：单元层、概念层、实体层。
Based on the three layers of learning space , the learning content is acquired from the correlation operation in the intra - relation and inter - relation , moves from the unit layer to the concept layer and entity layer , and finally , stops at entity layer
在学习空间的三层结构上确定了学习内容的获取就是在层内关系和层间关系上执行相关的操作，最后跳跃到实体层上的过程。
The relationships among these objects as well as possible existing manipulation are carefully studied . theoretically some problems , which the constitution issue of learning content located in unit layer , are solved , by using the media material locates on the entity layer
仔细研究了学习空间三层中的各类对象之间的关系以及可能存在的操作，从理论上解决了如何利用实体层上的媒体素材构造满足需要的单元层上的学习内容的问题。