The existing deterministic analysis methods based on period task modes are conservative, and are not suitable for soft real time systems such as multimedia systems and communication systems.

目前现有的基于周期性任务模型的确定性分析方法比较保守，不适合于多媒体、通讯等软实时系统的可调度性分析。

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In early period, there were no half-measures: usage was either right or wrong, and it was the task of the grammarian not simply to record alternatives, but to pronounce judgement upon them.

在早期，没有折中办法：（语法）用法不是对就是错，并且语法学家的任务不是简单地记录备选词，而是对它们作出判断。

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I did a study several years ago, asking procrastinators to finish a task in a certain period of time.

几年前我做过一项研究，要求拖延者在特定时间完成一项任务。

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In addition, this group reported a greater degree of relaxation in the recovery period after the task.

BBC: NEWS | Health | Black tea 'soothes away stress'

Whether 18th century or midcentury modern, the task at hand is usually an issue of craft and not period.

WSJ: Furniture Repair: If It's Broke, Fix It��Properly

But Spain faces a difficult task on EU enlargement, holding the presidency during the crunch period of negotiations on agriculture, regional policy and financial provisions, responsible for about 80 percent of the EU budget.

CNN: Jose Maria Aznar