在此
- 与 在此 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Young man's lawn in the green lawn sprang up 欢 quick choreographic;The child is firm to enter to catch a butterfly in the flower bush;The old man squats down by the side of the garden pond to angle for fish;Someone even has a tent in in the middle in the garden, plan to lead their night of romantic midsummer here.
年轻人在绿草如茵的草坪上跳起了欢快的舞蹈;小孩子扎进花丛中捕捉蝴蝶;老人蹲在池塘边垂钓;有人甚至在花园当中支起了帐篷,打算在此过他们浪漫的盛夏之夜。
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Based on the research results of Chaos theory, in this dissertation, it has made detailed analysis of the chaotic signal generator. Firstly, the characteristic and various detection methods of chaotic signal are recommended. Secondly, with the aid of software, such as MATLAB, PSPICE, EWB, etc, discussion of the process of generating chaotic signal proceeds. Through simulation, the output result of several kinds of chaotic circuit are analyzed and compared. Thirdly, aiming at Chuas chaotic circuit, through debugging, the impacts by components and parts in the circuit, such as operation amplifier, capacity, inductor, etc, has been further investigated. And then provides a new scheme to implement Lorenz chaotic system, the circuit design and analysis are presented in detail and it can be realized by the hardware of programmable arrays FPGA, the experimental results indicate that this scheme has the advantages of easy operation, flexible design and high efficiency. An application example in secure communications is also provided. Finally, through picking up the characteristic parameter-Lyapunov exponent of the Chaos we can analyze the performance of different chaotic signal generators.
本文在混沌理论研究成果的基础上,对混沌信号的产生做了详细的分析,涵盖以下内容:首先介绍了混沌的定义,混沌信号的基本特性和各种判别方法,特别是对简单的一维Logistic映射的硬件实现问题做了初步探索;其次对混沌信号的产生方法进行讨论,借助于MATLAB、PSPICE、EWB等仿真软件,对几种混沌电路输出的混沌信号进行了分析比较,并在此基础上针对典型三阶连续自治系统Chua's电路作进一步实验研究,通过混沌电路调试,深入研究电路中各元器件,特别是运算放大器、电容、电感等对混沌信号时域以及频谱的影响;再次研究连续混沌系统的数字化硬件产生,设计了Lorenz混沌电路在现场可编程门阵列FPGA上实现的新方案,在保密通信中的应用实验结果表明该方案具有操作简单、设计灵活、效率高等优点;最后针对不同混沌系统,采取不同算法,提取混沌特性参数Lyapunov指数,进而对不同的混沌信号发生器的性能进行了分析。
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Fixed customer owning 100 or so in marketing for 1 year period, takes that the network sells as axle centre in april , 2006 , the displacement being in progress in huai hai engineering college dong gang academy charge value , the network game card marketing serves, have set up almost 300 to end of june , 2006 clubber people of kaka person network club during here, continuously, the science and technology lianyungang branch company of ltd. sets up , all laughs at the share jiangsu province in august , 2006
在一年的销售期间拥有100左右的固定客户,2006年4月份以网络销售为轴心,在淮海工学院东港学院进行移动充值,网络游戏点卡销售服务,在此期间成立了"卡卡人网络俱乐部"到2006年6月底俱乐部会员近300人,2006年8月份江苏省连连科技有限公司连云港分公司成立,俱乐部与连连科技合作,采用新型话费充值业务"空中充值"在短短的一学期,俱乐部空中充值用户增至1000人,月销售额3万元以上。
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Finally, it concludes that the visional president is a hero in bureaucracy, and first among the equal in collegium. Moreover we emphasize that presidents play the role of mediator, negotiator and statesman, and uses the strategy of leadership well in the complex environment. And also president is both administrative and academic leader, and he is respected by people.
最后,在结论中指出,我们所需要的有视野校长系在官僚体系中是位英雄,但在同僚团体中只是同侪间的首要者而已,在此复杂的社会环境中色,要特别强调大学校长所扮演的仲裁者、协调者、政治家的角色,及善用领导的策略,受人尊重的一位兼具行政与学术地位的人物。
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On this basis, we give the characterization of the compact set in E〓,τ
引入了模糊数网的最终等度左连续概念,利用它得到了模糊数序列在水平收敛意义下存在极限的一个充要条件,在此基础上给出了空间E〓,τ(l中紧集的特征刻画,即空间E〓,τ(l中的闭集U是紧的当且仅当U一致支集有界,且U的每个网有在(0,1上最终等度左连续、在λ=0处最终等度右连续的子网。
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The results indicate that the precipitation rate of phosphoric acid is larger than 99% under the conditions of 2530 ℃, the mole ratio of trimeric cyanamide to phosphoric acid 21, two-step precipitation by trimeric cyanamide divided into two portions and separately stirring 60 min.
研究结果表明:在25~30 ℃、三聚氰胺与磷酸摩尔比为21、三聚氰胺分成两份进行两步沉淀、各搅拌60 min为三聚氰胺沉淀磷酸的最佳条件,在此条件下磷酸沉淀率大于99%;在磷酸三聚氰胺沉淀中夹带的氯化钙在固液质量比15、温度40 ℃和搅拌60 min下用水反复洗涤3次后可被完全去除;再将净化后的磷酸三聚氰胺与氨水反应,制得了符合GB 10205—2001标准的磷酸一铵和磷酸二铵产品。
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a scheme of channel estimation using cyclic prefix based on the measurement of the low-voltage power line channel model is presented.after obtaining the frequency response of pilot sub-channel under the state of comb-type pilot,the data sub-channel response is obtained by interpolating the frequency response in frequency direction.in the pilot-free data period,the estimation of the channel is carried out by using cyclic prefix in order to improve the performance of system error rate.
摘 要:通过实际测量给出低压电力线的信道模型,在此基础之上提出了利用循环前缀对信道进行估计的方法,即在梳状导频模式时,使用导频获得导频子信道频率响应后,对其在频域方向进行插值得到数据子信道响应,在其后没有导频的序列的数据周期内,使用循环前缀对信道进行估计,从而起到改善系统误比特性能的目的。
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Twelve noble sons of Trojans will I behead before your bier to avenge you; till I have done so you shall lie as you are by the ships, and fair women of Troy and Dardanus, whom we have taken with spear and strength of arm when we sacked men's goodly cities, shall weep over you both night and day.
在此之前,你就躺在这里,在我的弯翘的海船前;特洛伊妇女和束腰紧深的达耳达尼亚女子将泪流满面,哀悼在你的身边,无论白天和黑夜――她们是你我夺来的俘获,靠我们的勇力和粗长的枪矛,攻克一座座凡人富有的城堡。
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In recent years, much hard work has been done by scholars from all over the world. These work has mainly involved the denaturation mechanism of proteins in water, in the solution with denaturant and in the solution with other matters.
近年来,国内外学者在此方面做了大量的工作,主要涉及蛋白质在水溶液中的变性机理、在有变性剂存在下水溶液中的变性机理及在含有其它物质水溶液中的变性机理。
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The critical heating rate for different body radius was predicted by comparing the gas pressure when the peak degradation rate occurred with the threshold body strength which was determined by the diametric compression test of the green body during thermal debindering.
摘 要:以聚乙烯醇和NiFe2O4/Ni型金属陶瓷压坯为对象,采用热重分析研究PVA在N2气氛中的热脱脂行为,建立PVA热脱脂速率的数学模型,在此基础上,模拟并计算PVA分解产物气体在多孔粉末压坯内的压力构建情况;结合粉末压坯脱脂强度测试结果,分析粉末压坯在脱脂过程中压坯尺寸、粘结剂含量等因素对升温速率和脱脂时间的影响,获得不同半径尺寸压坯的极限升温速率。
- 推荐网络例句
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We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.
索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称;三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起,称之为挽歌体诗人或者史诗诗人,他们被称为诗人,似乎只是因为遵守格律写作,而非他们作品的模仿本质。
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The relationship between communicative competence and grammar teaching should be that of the ends and the means.
交际能力和语法的关系应该是目标与途径的关系。
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This is not paper type of business,it's people business,with such huge money involved.
这不是纸上谈兵式的交易,这是人与人的业务,而且涉及金额巨大。