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The archimedes spiral cord modulating chopper's exposure efficiency was theoretically analyzed and numerical simulated, and its impact on the following signal processing was obtained.

对阿基米德螺旋线调制斩波器的曝光效率进行了理论分析和数值模拟，得到斩波器曝光效率对后续信号处理的影响。

According to corresponding physical parameters, the neutron pulses formed by the single-chop-disk and the double-chop-disk were simulated by internationally popular Mcstas software respectively,and the influence curves of physical parameters on the pulses from the chop-chop- disks were obtained.

采用国际上常用的Mcstas模拟计算软件，分别对单斩盘和异向双斩盘产生的中子束流脉冲的形成特性进行了模拟计算，获得了相关物理参数对斩盘产生中子束流脉冲的影响曲线，讨论了单斩盘与双斩盘脉冲形成的束流特性的差别与优缺点。

This makes Chopper to Chopper combat very difficult for most players, as it's near impossible to see where the crosshair is.

这使得斩波到斩波打击非常困难对于大多数球员来说，因为它几乎无法看到的十字是。

What this paper finished mainly work as follows: Five-phase hybrid step motor driver system with fixed-chopping frequency and constant total current driving is fully described. Mathematical model of the system, included the current control circuit, power driving circuit and five-phase hybrid stepping motor is established. The steady modeling of the system is established and studied. Based on the steady modeling of the system, dynamic modeling of the system is studied and single step response characteristic is constructed with MATLAB/Simulink. The simulation results, which is certified by the theory analysis, coincide with the theory analysis.

本文主要完成的工作包括几个方面：对五相混合式步进电动机恒频斩波恒总流驱动系统进行了完整的描述；建立了包括电流控制电路、功率驱动电路以及五相混合式步进电动机在内的恒频斩波恒总流驱动系统的完整的数学模型；基于MATLAB/Simulink建立了恒频斩波恒总流驱动系统稳态仿真模型，并进行了仿真；在建立其稳态仿真模型的基础上，对动态模型进行研究，并借助于MATLAB/Simulink工具建立了恒频斩波恒总流驱动系统单步响应特性的仿真模型并对其单步响应特性进行了仿真研究，仿真结果与理论分析相符。

Mankind's history up to now helps a culture by torture Jun method to often see not fresh, like the Xing of fire Fen, commit by poison of Xing, behead, cut a waist, bury alive, boil Lao, car crack, Ling2 Chi2, disorderly the stick kill, execute by shooting, exterminate whole family, five horse cent corpses, dig to the prisoner's large intestine to bind while also having Sung Dynasty Bad is at the horsetail up, whip son a ring the horse drive fast and the prisoner immediately draws last breath an etc.

人类历史至今以酷刑峻法协助教化者屡见不鲜，如火焚之刑、服毒之刑、斩首、斩腰、活埋、烹烙、车裂、凌迟、乱棍打死、枪决、灭门、五马分尸，还有宋朝时把犯人的大肠挖出绑在马尾巴上，鞭子一响马飞驰而去，犯人立即气绝等等。

General have Rou, rice flour meat, white meat cooked clearance, liver,白斩鸡, porchetta, round bean curd, fried Rong, slice, fish health as well as 8 or 10 dishes.

一般要有扣肉、米粉肉、清煮白肉块、猪肝、白斩鸡、烤乳猪、豆腐圆、油炸蓉、笋片、鱼生等8或10道菜。

A detailed analysis of the main circuit introduction, control method and working principle of the direct-drive wind energy conversion system are given to introduce the two important parts a of this paper: First part is the control method of the multiple boost convertor, the important instantaneous current control method of this paper is given through the analysis of the main circuit structure, control method and working principle. Then a steady-state analysis for low-frequency, a high-frequency component analysis, and a closed-loop tracking performance analysis for dynamic response are provided to analyze the method proposed; And the second part is the control method of invertor.

在系统变流器整体结构分析的基础上，引出本文重点研究的两个变流环节的控制：第一部分是系统升压斩波器的控制，通过分析相关主电路结构、原理，建立了数学模型，引出本文重点研究的瞬时值控制策略的概念和具体实现，并对升压斩波器的瞬时值控制策略进行了详细的高频、低频模型分析和稳态、动态性能分析；第二部分是系统并网逆变器的控制，通过对逆变器主电路的数学建模和控制要求分析，研究了并网逆变器的瞬时值控制策略，包括电感电流控制内环和直流电压控制外环的具体设计和实现方法。

In this paper, the basic principle and the power factor of conventional SERDS are discussed. Aiming at its shortage of low power factor, boost chopper type SERDS is adopted. The equivalent circuit of the new scheme is built up, and then vector diagram is used to analyze the power factor of the system, also the harmonic distortion of the system is discussed. The experiment device is established base on a 380F/7.5 kW induction motor and a passive soft switching scheme is applied in order to improve the working condition of IGBT. At last, the experimental results are shown.

本文在分析传统串级调速原理的基础上，对系统的功率因数进行分析；针对传统串级调速系统功率因数低的缺点，采用升压斩波式串级调速系统加以改进；建立了升压斩波式串级调速系统的等效电路并采用向量图法对该系统的功率因数进行详细分析；分析了系统的谐波情况；构建了以7.5kW／380V电机为调速对象的升压斩波式串级调速系统实验装置，给出相应的实验结果；针对斩波器中IGBT处于硬开关状态的缺点，应用无源无损软开关技术予以改善，包括对软开关电路工作原理的分析、参数的设计并给出相应的实验结果。

The texture property of the ham sausage was a very important criterion,which was usually affected by several factors,including the adding of starch,protein,fat,water and colloid,and also including processing technology such as raw material adding,chopping time,heating and vacuum condition,as well as the pressure and temperature during the pasteurizing processing.

火腿肠质构是评价火腿肠的一个重要指标，质构受到很多因素的影响，包括产品中的成分，主料中的淀粉、蛋白质、脂肪和水分，辅料中胶体，还包括生产的工艺，尤其是斩拌中原料的添加，斩拌的刀速，斩拌的温度，斩拌的时间，斩拌是否有真空装置等；杀菌工艺中的温度、压强以及时间对火腿肠的质构也有着重要的影响。

Schleswig formulate a decree: whether to speak to write articles, there is strictly prohibited,"Hu" the word of pardon问斩liable.

石勒制定了一条法令：无论说话写文章，一律严禁出现&胡&字，违者问斩个赦。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。