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The formation mechanism of the absolute instability and gyrotron backward wave oscillations is analyzed, and the methods to suppress the parasitical modes are discussed.The nonlinear theory model of gyro-TWT is consummated by considering the influence of tapered magnetic field and waveguide radius, electron velocity spread, and waveguide loss on electron beam-wave interaction. The large-signal characteristic of gyro-TWT, such as launching loss and absolute instability, are also analyzed in detail. This work establishes the foundation for the development of a gyro-TWT amplifier.

重点研究了两段损耗波导结构和损耗陶瓷结构回旋行波管中的电子注-波互作用，分析了绝对不稳定性和回旋返波振荡的形成机制和抑制寄生模式的方法；完善了回旋行波管的非线性理论模型，并考虑了磁场和波导半径渐变、速度零散、波导损耗等因素对注-波互作用的影响；详细分析了发射损耗、相位稳定性等回旋行波管的大信号特征，为回旋行波管放大器的研制奠定了基础。

In this thesis, the basic arithmetic of PIV software - cross-correlation arithmetic is introduced in detail, During the data process, through processing the two sequential images by the cross-correlation arithmetic, the vector charts of particles velocity can be obtained, so is the chart of absolute velocity, with velocity decomposed into the radial velocity and axial velocity.

本文对试验所获得的连续图像通过互相关算法，获得颗粒速度矢量图，并将速度分解为径向速度和轴向速度，对每一小区域内的颗粒按速度方向不同进行速度平均，获得颗粒的平均速度分布曲线。

In this dissertation, the synthesis, the properties and the application of the super absorbent polymer were investigated in detail.

基于此，本文对高吸水树脂的制备、性能及其若干应用展开了详细的研究，取得了创新性的结果。

On the other hand, the theory and methods can strongly supportparameters optimization of shock absorber detail design work.

在这些问题中，减振器阀片挠曲变形量的计算对仿真结果的影响很大。

The sales tax rate is a detail I abstract out of the code and store externally.

销售税率是一种细节，我要把它从代码中抽象出来存放到外部。

Representing is not always carried out at full scale but can be abstracted at different scales and levels of detail.

表现的内容不一定是用1：1比例的来表现，也可以抽象成不同的比例来表现不同的细节。

We won ' t go over the Tk widgets in detail as there is plenty of good docu- mentation available on them, either from the Tkinter topics page at the main Python Web site or the abundant number of Tcl/Tk printed and online resources (some of which are available in Appendix B).

我们不准备对所有Tk组件一一详细讲解，因为已经有许多关于它们的很好的文章可供参考--不论是从Python网站的Tkinter主题页面还是数量可观的Tcl/Tk印刷品，抑或是在线资源（其中一些可以在附录B中找到）。

We won't go over the Tk widgets in detail as there is plenty of good docu- mentation available on them, either from the Tkinter topics page at the main Python Web site or the abundant number of Tcl/Tk printed and online resources (some of which are available in Appendix B).

我们不准备对所有Tk组件都一一详细讲解，因为已经有许多关于它们的很好的文章可供参考--不论是从Python网站的Tkinter主题页面还是数量可观的Tcl/Tk印刷品，抑或是在线资源（其中一些可以在附录B中找到）。

But, academe has not paid much attention to the research on the detail of TV news.

然而，学术界并未对电视新闻细节的研究给予足够的重视。

A specific case of the scheme which is named the accelerative anticipating projective response scheme is studied in detail.

详细研究了该系统的一种特殊情况——加速预测投影响应。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。