查询词典 oscillation method

The electric potential oscillation including periodic oscillation,quasi- periodic oscillation and turbid oscillation of carbon steel/H2SO4＋ K2Cr2O7/Pt system has been studied.

刘靖研究了碳钢/H2SO4+K2Cr2O7/Pt体系中的电位振荡现象，如周期振荡、准周期振荡和混沌振荡等，并对其振荡机理进行了初步分析和讨论。

Through simulation and experimental ways to combine studies of plasma engine oscillation circuit inductance on the impact Experimental results show that the increase with inductor current oscillation lower voltage oscillation, Current changes in oscillation and the existence of a 0 ~ 28mH mutation interval conclusions.

本文通过实验与仿真相结合的方式研究了等离子发动机回路电感对振荡的影响，通过实验得出了随着电感增大电流振荡降低电压振荡增加，且电流振荡变化存在一个0~28mH的突变区间的结论。

The main research is how to control and long term monitor the shaft torsional oscillation. The measurement technique of torsional oscillation is an important link of torsional oscillation control and monitor system and a basement to carry out the corresponding method.

扭振研究的主要内容是如何实现对轴系扭振的控制及长期监测，而扭振的测量技术又是扭振控制和监测系统的重要环节，是扭振控制与监测手段付诸实践的基础。

This paper also presents an improved oscillation circuit according to the expression of oscillation frequency, and puts forward another method of analyzing oscillation circuit.

根据振荡频率的表达式，给出一种改进后的电路，提出了振荡电路的另一类分析方法。

Main points of the thesis are as follows:(1) The main function models and information relations between these models in the CAPP system in the integrated CAD/CAM project are explained, a new process plan design method is mentioned based on analyses of process plan design. This method is based on the process plan prototype, and develops the prototype little by little until the perfect process plan is completed, the prospect of this method is discussed;(2) The feature abstracting rules and methods are studied, a feature coding system is developed based on GT, all the defined feature models are described by the mathematical methods;(3) The integrated method of CAD/CAPP based on features is mentioned, this method defines a feature exchanging model, and develops an interface software to exchange design data into technology data base, this technology data base includes the design and technology information of the parts;(4) The process plan reasoning method based on features is created, this method uses Mycin algorithm to solve the reasoning of the feature process plan. A process plan making system is developed. In this system part process plan is made by the semi-intelligent method, this method uses the feature reasoning, feature process chain searching and man-computer talking together;(5) The main structure of the HOPE system is introduced, a shaft drawing and its process plan made by this system are shown, the data process problem in process drawing making is also discussed;(6) A new method of describing process rule is introduced, this method uses IfThen rules and neural nets weight values together to describe process rules, the BP algorithm is adopted in this method;(7) The optimal machining sequence problem of the process steps on the same fixturing is discussed, optimal algorithms SA is applied to solve this problem, the result shows that this method is more efficient than the traditional method;(8) All jobs in the thesis are summarized. In order to carry out the research in the future, some rational proposals are given.

全文论述的内容主要有下列几个方面：(1)较为系统地阐述了CAD／CAM一体化工程项目中CAPP系统的主要功能模块及其信息流程，在分析工艺设计过程的基础上，提出了基于特征原型的渐进式工艺设计方法，并探讨了该方法的应用前景；(2)研究了零件特征提取的原则和方法，在成组技术的基础上，开发了一套基于特征的分类编码系统，并在提取零件特征的基础上，定义了零件特征的数据模型，开发了基于轴类零件特征的参数化设计系统；(3)研究了基于特征的CAD／CAPP集成的方法，通过定义零件特征数据模型的存储结构，开发了将设计数据转换到工艺数据库中的接口程序，为后续的CAPP系统提供必要的零件形状和工艺信息；(4)研究了基于特征的工艺推理方法，将Mycin算法应用到工艺决策中，开发了基于特征的工艺推理及工艺方案生成系统，在系统中综合运用特征推理、特征加工工艺链查询及人机对话相结合的半智能化方法确定零件加工工艺；(5)介绍了整个HOPE系统的总体结构，通过运行HOPE系统绘出了一轴类零件的零件图，并生成了该零件的加工工艺方案，初步探讨了基于特征的工序图生成技术中数据处理问题；(6)研究了工艺设计过程中知识如何有效表示的问题，提出了将显式的IF-THEN规则表示与隐式神经网络权值表示相结合的工艺知识表示方法，并利用BP算法进行了工艺知识表示的初步研究；(7)研究了工艺设计过程中同一安装下工步优化排序问题，利用神经网络中基于模拟退火的理论来解决该工步优化排序问题，实践证明该方法较传统的算法具有更高的效率；(8)总结了本文所进行的研究工作，为今后进一步开展工作提出了较为合理的建议。

It is also necessary that the center value of load capacitance (to determine the absolute value of oscillation frequency) and the variable range (fine adjustment range of oscillation frequency) are maintained at the optimum values in the oscillation circuit.

在振荡电路中，负载电容的中心值(其决定谐振频率的绝对值)和其变化范围(谐振频率的良好调整范围)应保持在最佳值。

The numerical results show that lossy dielectric-load can heighten the start oscillation current of absolute instability, and increase depends on the magnetic field strength and the perpendicular-to-parallel velocity ratio of the electrons; The thickness of the lossy waveguide increases the start oscillation length of backward wave oscillation.

结果表明：损耗介质的加载，可以提高绝对不稳定性起振电流，提高的幅度依赖于工作磁场偏离饱和磁场的程度、电子束横纵速度比等；增加波导损耗介质加载的厚度，可以提高竞争模式的回旋返波起振长度。

In order to increase the reversibility and the amplitude of the salt-water oscillation, the salt-water oscillation and the liquid membrane oscillation were coupled to create a compound oscillator.

实验结果表明，有表面活性作用的物质可以增加盐水振荡的振幅，有络合性能的物质的络合作用是盐水振荡可逆的关键，既有络合作用，又可以起到表面活性剂作用的物质既可以增加盐水振荡的振幅，又可以使盐水振荡可逆。

Triggering off the free oscillation of the reinforced bar by amplifying the triggering signal of the piezoelectric ceramic sensor by the emitter coupled oscillation circuit , we have measured the oscillation frequency of various reinforced bars, and then we can calculate the magnitude of the corresponding pre stressing force accor.

论述了振动法测量钢筋的预应力的新方法，振动触及压电陶瓷传感器产生的电信号，通过双稳态触发振荡电路，经放大后启动钢筋自由振动。根据弦线振动频率和所受张力之间的关系，测量出不同型号不同长度的各类钢筋的频率，从而得出对应钢筋的预应

Continuous Casting Strand ; Mechanism of Oscillation Mark Formation ; Oscillation Mark Controlling ; Mold Oscillation ; Electromagnetic Continuous Casting

连铸坯；振痕形成机理；振痕控制技术；结晶器振动；电磁连铸

The French are not suggesting a new EU treaty, but they have plenty of other wheezes.

法国人并不是在建议签署一个新的欧盟条约，但他们有许多其他的阴谋。

This letter was written by my brother.

这封信是我弟弟写的。