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By mapping a one-dimensional function of time, the time-frequency representation can localize the signal energy in both the time and frequ ency directions.

通过对一个一维时间或频率信号进行变换，其时频表示能够在时间-频率平面上描述信号的能量分布。

We need a powerful government, with an encyclopedic wisdom and a comprehensive governance in all directions.

我们需要一个强有力的政府，带着足够的智慧进行全方位的或综合性的管理。

Already she was the first woman to swim the English Channel in both directions.

她是第一位游泳往返英吉利海峡的女性。

Once you are clear, you will see immense love will envelop you in all directions.

一旦你是清晰的，你会看见巨大的爱从四面八方降临你。

In chapter seven, we summarize the main results of our research and envision the future research directions.

第七章总结研究的主要结果并展望未来研究的若干方向。

To be their prime to Ephemera strigata, Zhanhuofenfei in all directions, no home place.

到了壮年可以出蝣时，四面八方战火纷飞，没有落脚的地方。

The epilogue of this paper points out the lack of research and future directions.

文章结语部分指出了研究的不足和今后努力的方向。

Different varying gradients of mosses N concentrations and δ^15 N were observed for different directions, indicating the diffusion and transport of city NHx was not equipotent around the urban area, which was mainly related to local factors such as geographic conditions, vegetation coverage, wind direction and urbanization etc.

不同方向苔藓氮含量和δ^15 N随距离的变化梯度存在差异，表明城市铵向周边不同方向的扩散迁移具有非均一性，其原因可能与地形条件、植被状况、风向、城市化程度等有关。

The observational data can only identify an equivalence class of DAGs, so we must perform intervention experiments to determine the directions of reversible edges from experimental data.

然而，仅有观察数据只能识别出DAG的一个等价类，而不能唯一确定其中的一个DAG，因为可反向边的方向不能确定，所以，必须进行干预实验。

Between Magda and Errol there is a love that can spill out in many directions.

百岁老人之间和errol有一种爱情可能泄漏出来，在很多的发展方向。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。