版本化追踪并控制所有的变更作为模型连续的序列,或者版本。
Versioning: Tracking and controlling all changes as successive generations, or versions, of the models.
一个扩展执行模型,可以支持周期性计算和执行策略控制,为每一个活性对象实现异步化、事件驱动激活或周期性激活。
An extended execution model that supports periodic calculations and control of execution policies for each active object as asynchronous, event-driven activation, or for periodic activation.
控制器从模型请求数据并发送给视图完成格式化。
The controller requests data from the model and sends it to the view for formatting.
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