在典型的servlet模型中，一个打开的连接意味着一个不执行任何操作的专用线程，它将一直等待，直到在响应事件时更新客户端。
In the classic servlet model, an open connection means a dedicated thread is doing nothing but waiting until it needs to update the client in response to an event.
地下洞室群的交通运输系统是一种典型的离散事件动态系统，难以用解析方法计算的数学模型来描述。
The traffic transportation system of underground structure group is a kind of typical discrete event dynamic system, which is difficult to describe with analytic mathematic models.
HTA模型被用来围绕医师抽取一个病人血样的事件组合故事，来支撑典型场景的基于目标的结构。
The HTA model was used to compose the story around the event of a phlebotomist drawing a patient's blood that supports the goal-based structure of the scenario.
大坝混凝土施工是一种典型的离散事件动态系统(DEDS)，系统内相互作用较复杂，很难用一个数学解析模型来表达。
Concrete construction of dam is typical dispersed event dynamic system (DEDS). Mutual action is very complex in DEDS, and it is very had to be expressed by mathematic analytic model.
大坝混凝土施工是一种典型的离散事件动态系统(DEDS)，系统内相互作用较复杂，很难用一个数学解析模型来表达。
Concrete construction of dam is typical dispersed event dynamic system (DEDS). Mutual action is very complex in DEDS, and it is very had to be expressed by mathematic analytic model.
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