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1·And the energy of the eastern component is mostly increased with time-variation.

东向分量的能量随时间的变化以增加为主。

2·Experiments show that the technique is effective for processing unstable signals of time-variation spectra.

实验结果表明，该法是分析处理具有时变谱特性的非平稳信号的一种有效方法。

3·We use these findings to investigate the forces driving time-variation in expected corporate bond returns.

我们用这些结果来探讨在预期的力量驱动动态公司债券的回报。

4·Test the performance of controller designed in this paper, by doing simulation experiments with the first order inertia plant having the pure lag and time-variation parameters.

以参数时变时滞后过程为被控对象，仿真研究了本文设计的控制器性能。

5·The problems summarized as below: it is a nonlinear and time-variation system with uncertainties, and it is more complex. So the high performance of this control system is required.

其主要表现在：系统越来越复杂、存在非线性、时变性和不确定性，从而对控制系统的各种性能要求越来越高。

6·Using the 10th International geomagnetic Reference Field (IGRF) models, the latitudinal distribution of harmonic amplitude and its time-variation of geomagnetic potential are investigated.

利用第10代国际参考地磁场模型(IGRF)的资料，研究了地磁位的谐波振幅的纬度分布及其时间变化。

7·In view of the speed response requirement and the parameter time-variation of electro-hydraulic position servo system, the PID controller and the fuzzy controller are designed respectively.

针对电液位置伺服系统的快速性要求和参数时变性的特点，分别设计了PID控制器和模糊控制器。

8·By using the environment database, the time-variation of the database structure is converted into that of the data of database; the modifying the program is converted into the updating the database.

通过“环境数据库”将数据库结构的时变转化为数据库数据的时变，使得对程序的维护变为对数据库数据的更新。

9·Colds mutate even while they're infecting you, and new strains pop up so often that by the time drug-makers create a vaccine against one variation, the serum is already out of date.

即使在感染你的时候，感冒病毒也会发生变异，而且新的病毒毒株经常出现，以至于当制药商研制出针对其中一种变异的疫苗时，血清已经过时了。

10·Scientists at the time often depended on the royal courts for patronage. But there was considerable variation in the relationships between the courts and scientists in different countries.

那时候的科学家基本上都依靠皇室提供财力支持。但在不同的国家，皇室和科学家的关系有极大差异。

时变

1·Experiments show that the technique is effective for processing unstable signals of time-variation spectra.

实验结果表明，该法是分析处理具有时变谱特性的非平稳信号的一种有效方法。

2·Test the performance of controller designed in this paper, by doing simulation experiments with the first order inertia plant having the pure lag and time-variation parameters.

以参数时变时滞后过程为被控对象，仿真研究了本文设计的控制器性能。

3·The control system of BLDCM have the characteristics of time-variation, nonlinearity and close coupling. How to achieve the goal efficient and reliable is a problem will be resolved in the paper.

无刷直流电机（BLDCM）控制系统具有时变、非线性、强耦合等特征，如何高效可靠地实现无刷直流电机的驱动控制是文章要解决的问题；