与层次模型相比，关系模型相当复杂。
Compared with the hierarchical model, the relational model is quite complicated.
如果遵循层次模型，他们可以很好地解决某一个问题。
If they follow the hierarchical model, they solve one problem very well.
通过例子说明，属性层次模型是简单有效的。
The example shows that attribute hierarchical model is simple and efficient.
通过例子说明了属性层次模型是简单而有。
It is showed through an example that AHM is simple and efficient.
文章介绍了层次模型法的研究背景和研究思想。
This paper introduced the research background and thought of Layer Model Method.
最后的示例表明了层次模型与控制算法的有效性。
Finally, an example is given to show the availability of the model and control algorithm.
探讨了文化网格的体系结构、层次模型及关键技术。
This paper discusses the architecture, hierarchy and key technology of culture grid.
案例研究的参与者都很认同指导模型的内容和各细节层次。
Case study participants appreciated the guidance model's content and level of detail.
订单可能是数据模型中的其他层次的根。
The Order could be the root of another hierarchy in the data model.
仅仅通过模型导航很难追踪这类层次关系。
This sort of hierarchical relationship is difficult to trace by just navigating through the model.
那么不同的技能层次如何应用到像这样的一个模型当中呢？
So how do the different skill levels respond to a model like this?
现在我们需要把对象层次结构映射到表模型。
模型通过在数据库层次上设置优先级解决了这个问题。
This is addressed by the model by setting priorities at the chunk level.
我们修改域类模型以捕获在这个抽象层次上的角度。
We refine the domain class model to capture the perspective at this level of abstraction.
我们的任务是，构建一个树形的查看器用以显示模型的层次结构。
We want to build a tree viewer that displays the hierarchy of a model.
这是另一个模型层次结构(接下来将解释)的一部分。
因此，从一个较高的层次上，观察者模式提供了一种简单的异步模型。
Thus, at a high level, the Observer pattern provides a simple asynchronous model.
原因很简单：模型具有自己的继承层次结构。
The reason is simple: The module has an inheritance hierarchy of its own.
一个层次的模型就是另一个层次的视图。
其次在代码层次对参考模型进行了优化。
第三章提出了运动功能到机构映射、机构映射到机构组合的层次运动方案设计模型。
The model is composed of three levels, namely motion function, mechanism mapping and mechanism combination.
首先，搜集某高校历史科研数据作为模型中的第一层次数据。
First, the historical research data is collected as the first level data in this model.
有不同层次的模型。
系统模型由三个层次组成，即初步规划层，决策层和详细规划层。
The system model consists of three levels, including initial planning, decision making and detail planning.
通过对车辆事故的分析，建立了影响因素的层次结构模型。
Through analyzing vehicle accident a novel model of hierarchy has built in this paper.
提出了一种新的模型——规则树来进行图像关联规则的分层次提取。
This paper proposes a new model "rule tree" to derive layered image association rules.
事实上只有高层次别数据模型必须高层次开发模型完全开发。
In truth only the high level data model must be completely developed.
一个层次结构用户兴趣模型是一个以单个兴趣向量为节点的树。
A hierarchical user interest model is a tree whose nodes are the single interest vectors.
但它是一种单层次的评价模型。
事实上只有高层次别数据模型必须完全开发。
In truth only the high level data model must be completely developed.
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