The specialized content model should always identify elements through the element entity rather than directly by name.
专门化内容模型应该总是通过元素实体而不是直接通过名称来标识元素。
The content model should allow for the possibility that the element entity might expand to a list.
内容模型应该允许元素实体可以扩展成列表的可能性。
For each CompositeData, an entity model element is also created in order to capture conceptual entity-relationship models.
为了捕获概念性的实体-关系模型，为每一个复合数据建立一个关系模型元素。
It is a first class entity in the meta-model of SimpleRDB, but it has no equivalent in UML 2.0. That is why the signature of the relation has no formal parameter that relates a UML element.
它是SimpleRDB的通用模型的第一个类实体，但是在UML 2.0中没有它的对等体。这就是关联的签名没有与uml元素相关的形式参数的原因。
Collections can either model value types (element or composite-element) or entity reference types (one-to-many or many-to-many associations).
集合可以是值类型的(元素或组合元素)，也可以是实体引用类型的(one - to -many或many - to - many关联)。
Entity model from modeling can be directly used in motion simulation analysis and finite element analysis, which shortens the design time and reduces the data exchange between softwares.
建模所得的实体模型直接用于运动仿真分析和有限元分析，缩短了设计所需的时间，减少了软件间的数据交换。
Second, Simulating experiment condition, putting constraint on boundary of model, changing entity model to finite element model and using buckled analysis to calculate the CD critical load.
第二步，模拟实验条件，对模型施加边界约束，把实体模型转换为有限元的数学模型，并利用屈曲分析，对瓦楞纸板竖向边压的临界载荷进行计算。
Second, Simulating experiment condition, putting constraint on boundary of model, changing entity model to finite element model and using buckled analysis to calculate the CD critical load.
第二步，模拟实验条件，对模型施加边界约束，把实体模型转换为有限元的数学模型，并利用屈曲分析，对瓦楞纸板竖向边压的临界载荷进行计算。
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