查询词典 used to
- 与 used to 相关的网络例句 [注:此内容来源于网络,仅供参考]
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In this paper, the cationic polymers prepared by our lab were used as emulsifiers to emulsify alkyl ketene dimmer wax, and PAC was used to increase the charge of the emulsion. The optimum emulsifying conditions was determined as the follows emulsifying time was 8 min, the emulsifying temperature was 60℃, the stirring speed was 20000 r/min, and usage of the emulsifier was 4%.
用实验室自制阳离子聚合物复合乳化剂乳化AKD,加入一定量的聚合氯化铝用作电荷增强,对AKD 的乳化工艺进行了研究,确定了最优乳化时间为8 min,乳化温度为60℃,搅拌速度为20000 r/min,乳化剂用量为4%。
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When used as a key to a map, either value could be used to access the corresponding element.
用做 map 对象的键时,可使用任意一个键值来访问相应的元素。
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The thesis contains five chapters. The first chapter summarizes the development and research of switched reluctance drive, discusses the main research direction, and explains the main work in this paper. In chapter 2, hardware system which includes the design of power converter and various control circuit is discussed. TMS320LF2407 DSP is used to design the hardware circuits of SRM control system, and design details including the current detection, position sensing, fault protection, speed detecting, keyboard and display etc. are provided. Because of the full use of the abundant peripheral resources of DSP, it comes to the aim simplifying the circuit structure and heightening the reliability. In chapter 3, the application of neural network on SRM control system is introduced, a new the application of neural network and the method of sampling is proposed and a simulation system based on Matlab/Simulink is established. Chapter 4 discusses the routine designing issue. Because the modularized programming method is adopted, and multi-interrupt processing technique is used, operation efficiency of the control software is highly raised. At last, the foregoing SRM control system is tested. Speed adjustment is realized, and other targets on the research and design of SRM control system are reached, which establishes a good foundation for further research.
本文共分五章,第一章概述了开关磁阻电机调速系统(Switched Reluctance Drive,简称SRD)及其发展和研究现状,论述了其主要研究方向,并说明了本文的主要工作;接下来的一章主要讨论了SRM的硬件系统,主要包括功率变换器的设计和各种控制电路的设计,本文以TMS320LF2407为核心设计了开关磁阻电机控制系统硬件电路,给出了包括电流检测、位置检测、故障保护、测速电路及键盘和显示电路等部分电路的详细设计,充分利用了DSP的丰富外设资源,达到了简化电路结构、提高运行可靠性的目的;第三章介绍了人工神经网络在开关磁阻电机控制系统中的应用,提出了一种新的应用方式(利用GPFN神经网络调节PI参数)以及如何采取样本,搭建了基于Matlab/Simulink的仿真系统;在第四章中,讨论了开关磁阻电机控制软件的设计,采用模块化编程方法,采用基于多中断的控制程序,提高了控制软件的效率;最后,对所设计的开关磁阻电机控制系统进行了实验,实现了电机调速,达到了开关磁阻电机控制系统研究和设计的预期目标,为更近一步研究打下了基础。
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In my memory, my father used to be very brave, and my mother used to be so kind-hearted.
在我的记忆中,我的父亲十分勇敢,母亲很善良。
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Finally,the wind velocity data of Nantong observatory are used to verify the methods above-mentioned,and the likelihood ratio method and Kolmogorov statistic are used to test the fitness of the distribution.
引入涵盖Gumbel,Frechet,Weibull三类极值渐近分布的广义极值分布模型,给出该模型参数的极大似然估计的计算公式,并由此导出设计基本风速及其置信上限的计算方法。
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Finally, the wind velocity data of Nantong observatory are used to verify the methods above-mentioned, and the likelihood ratio method and Kolmogorov statistic are used to test the fitness of the distribution, It is obtained that the distribution of yearly extreme wind velocity of the observatory is in keeping with Frechet distribution, and the experimental distribution form from samples basically coincides with the theoretical ones.
采用南通气象观测站的年最大风速资料进行实证研究,分别用似然比法和Kolmogorv统计量检验分布的拟合优度,得出南通气象观测站年最大风速符合Frechet分布,而由样本值构造的经验分布与理论分布曲线基本相吻合。
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In this paper 22factors in 4 sides were used to evaluate the stability of laneway in coal seam and 20 factorsin 4 sides were used to evaluate the stability of laneway in rock.
选用了4 个子指标22 个因素作为影响煤矿中煤巷稳定性的评价指标体系;4 个子指标20 个因素作为影响煤矿中岩巷稳定性的评价指标体系。
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I do not know what advanced methods are now used to reach microbiology, but at that time lantern slide s were used to show the microbes; and if the lecture ended early, the instructor might show slides of natural scenery or news to fill up the time.
我已不知道教授微生物学的方法,现在又有了怎样的进步了,总之那时是用了电影,来显示微生物的形状的,因此有时讲义的一段落已完,而时间还没有到,教师便映些风景或时事的画片给学生看,以用去这多余的光阴。
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I'm actually perfectly competent with either hand at fencing, but I elected to do it left-handed because no-one else used a left-handed foil and whereas I was used to fencing right-handers, they weren't sure how to fence a leftie.
其实我完全可以胜任与击剑手,但我当选为做到这一点的左手,因为没有人用左手铝箔和而我被用来击剑右弯,他们不知道如何栅栏一leftie 。
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A modified Particle Swarm Optimization algorithm is proposed and used to optimize the sidelobe level of plane arrays, in which special techniques as global best perturbation and jumped inertia weight strategy are adopted. The PSO algorithm is also used to select a better combination of optimal parameters for itself.
摘要该文运用一种改进的粒子群优化算法对不等幅激励的矩形平面阵列天线的最大旁瓣电平进行了优化,采用对全局最优粒子微扰和跳变的惯性权重策略,并使用粒子群算法本身对参数组合进行了优化选择。
- 相关中文对照歌词
- Used To Know Remix
- I Could Get Used To This Lovin' Thing
- My Memory Ain't What It Used To Be
- Get Used To It
- I Used To Know How To Walk On Water
- You Used To Love To Dance
- She Used To Say That To Me
- Remember When (Used To Be Used To It)
- To Think I Used To Love You
- He'll Never Be...(What I Used to be to You)
- 推荐网络例句
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But we don't care about Battlegrounds.
但我们并不在乎沙场中的显露。
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Ah! don't mention it, the butcher's shop is a horror.
啊!不用提了。提到肉,真是糟透了。
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Tristan, I have nowhere to send this letter and no reason to believe you wish to receive it.
Tristan ,我不知道把这信寄到哪里,也不知道你是否想收到它。