等时的
- 与 等时的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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I saw when at his Word the formless Mass, This worlds material mould, came to a heap: Confusion heard his voice, and wilde uproar [ 710 ] Stood rul'd, stood vast infinitude confin'd; Till at his second bidding darkness fled, Light shon, and order from disorder sprung: Swift to thir several Quarters hasted then The cumbrous Elements, Earth, Flood, Aire, Fire, [ 715 ] And this Ethereal quintessence of Heav'n Flew upward, spirited with various forms, That rowld orbicular, and turnd to Starrs Numberless, as thou seest, and how they move; Each had his place appointed, each his course, [ 720 ] The rest in circuit walles this Universe.
我曾目见,这世界实质不成形的块块,在神的指点下就变成这许多东西。 '混沌'听从神的话,旷野的喧哗镇静下去,无边无垠的空间,也有了界限;到神第二次发言时,'黑暗'就逃走了, '光明'来临了,从混乱中产生了秩序。从此,地、水、火、风等粗笨的元素都赶快各就各位;同样地,天上轻灵的第五元素也以各种各样的形式产生出来,升到空中,滚成球形,正如你所看见的不可计数的星辰怎样运行。它们各有指定的地方,各有轨道,剩下的灵气,成了宇宙的城廓。
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This paper presented the research and exploration of mechanism and technics as well as the design of the magnetic circuit of this new compound machining, based on above, establishing the parameter model, meantime, analyzing influential effects on productivity of magnetic and EDM compound machining the holes through large numbers of experiments, including velcoity contrast experiments of pre-compound and after-compound machining with the change of current, velcoity contrast experiments of pre-compound and after-compound machining with the change of magnetic induction, velcoity contrast experiments of pre-compound and after-compound machining with the change of impulse width, experiments of the superficial roughness, experiments of the Electrode wastage, and intersectant experiments analysis as well as the change experiments of current waveforms. Through a number of experiments we analysed the influential effects of magnetic and EDM compound machining, compared the factors with EDM by oneself. A large of experiment records and deducibility have demonstrated that the productivity of magnetic and EDM compound machining is developed by 20%~400% than traditional EDM.
本论文对磁场电火花复合加工这种新的复合加工的机理、工艺和复合加工的磁路设计进行了研究和探索,在此基础上,建立了磁场电火花复合加工的参数模型,同时通过大量的随着电流变化磁场电火花复合前后加工速度对比实验、磁感应强度变化时的加工速度变化实验、随脉冲宽度变化的加工速度实验、表面粗糙度实验、电极损耗量实验、磁场电火花复合加工正交实验分析、电流波形变化等实验,实验分析了影响磁场电火花小孔加工效率的因素,并且跟单一的电火花加工中的影响因数进行了比较,大量的实验数据和理论推导证明磁场电火花复合加工比传统的单一电火花加工的效率提高了20%~400%左右。
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Moreover regardless of adopts what kind of existence the existent solution, digit imaging system's latitude must be a certain that cannot be intervened artificially value on the physical level after leaving factory. Some digital cameras are known as alterable latitude, but they change camera's latitude by past treatment through DSP. So users cannot change latitude, light-shade transition or color transition as film camera just by replacing film's type. Now the civil camera's minimum ISO is 50. This value is discommodity for users to photo by the long exposure or other similar mode.
另外无论采取何种目前存在的解决方案,由于目前具有动态范围可调功能的数字照相机都是针对CCD所采集的数据进行再处理,因此,数字成像系统物理层上的宽容度动态范围始终是一个人工不可干预的固定值,这样的话,用户无法像胶片一样仅仅改变胶片型号便能实现宽容度和色彩过渡的改变以方便画面的创意,而且目前民用照相机感光度的最低值一般为ISO50,这个值在进行类似长曝光等方式的创意摄影时仍存在较大的不便之处。
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In general, this paper includes several parts, shown as the following: The first part summarizes the background and outline of stock index future and introduce briefly its local status and CSI 300 stock index future contract. The second part has a retrospect of the main academic papers of both local or overseas, and also a discussion of relevant hedge strategies and models, to lay a solid theoretical foundation for the empirical analysis and test for the operation process of hedge in latter parts. The third part outlines the principle, key factors and real operation process of hedge. Moreover, it makes a empirical analysis on popular hedge models with HK Hang Seng index. In the end, it test the hedge effect of trading on IF0706, CSI 300 stock index future contract, with CCB select-growth securities fund as present underlying. The fourth and also the last part, explores how to define hedge ratio in china mainland market. It includes the stability test ofβfor local securities portfolio, adjustment of historicalβand best data length for estimation of historicalβ, etc. Also, the thesis makes some beneficial experiments on the definition of best data length for estimation of historicalβ, survey of fashion forβand variation for industryβs. Fortunately, it's got some meaningful results.
按照以上研究思路,本论文论述由以下几个部分构成:第一部分,简要概述股指期货产生的背景和基本情况,对国内股指期货进程和沪深300股指期货合约进行简单介绍;第二部分,回顾海内外股指期货避险研究的主要文献,讨论相关避险策略及避险模型,为后面套期保值策略如何有效运用的实证分析和检验提供理论基础和依据;第三部分,对套期保值的原理、关键因素及实际流程进行概述,并采用香港恒生指数对常用的几种避险模型进行实证分析,最后一揽子以建信优选成长股票型基金为现货标的,实际检验以沪深300股指期货模拟交易IF0706产品进行对冲时的套期保值效果;第四部分,探讨国内确定避险比率的过程,包括国内股票组合β值的稳定性检验、历史β值的修正及估计历史β值的最佳数据长度等,通过数据分析,本文在寻找估计β值的最佳数据长度和考察风格、行业β值的差异上做了较为有益的尝试,并得到了有助于现实操作的结果。
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It gets harder still when the only way CS will take an accusation seriously is if the woman making the accusation produces a police report, which makes many false, Western, ethnocentric assumptions including that the rule of law in every country is applied equally regardless of sex, nationality, sexual orientation, ethnicity, class, etc.; the behavior is classified as a crime in every country and the victim would not be deemed guilty (eg, homosexual encounters or drug-related incidents); the police are reliable and a written report can be obtained in a timely manner without excessive effort or expense; and one is culturally and linguistically competent and knowledgeable of a country's crime reporting procedures or can easily find out what they are.
它更难获得的唯一办法时,政务司司长将采取指控严重的是,如果妇女提出指控产生警方报告,这使得许多虚假的,西方的,种族优越感的假设,包括法治,在每个国家都同样适用,不论其性别,国籍,性取向,种族,阶级等;的行为列为犯罪在每个国家和受害者将不被视为犯罪(例如,同性恋遇到或毒品有关的事件),警方是可靠和书面报告可及时没有过多的努力或牺牲,一个是文化和语言能力和知识的一个国家的报案程序,或可以很容易地发现它们是什麼。
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Under the service rule that customers who first come would first get the service, we use the structure analysis method to get the stochastic decomposition of the queue length with the generating function of probability and the steady waiting time with Laplace-stieitjes transforms.
重点分析了带启动期的一般减量服务的单重休假$M/G/1$排队系统的一般结构,利用结构分析的方法,在先来先服务规则下求得稳态队长的随机分解的概率母函数和稳态等待时间的随机分解的$LST$,同时,讨论了系统处于平衡的条件及其概率含义的直观解释,进一步讨论了系统处于休假期、忙期、忙循环等状态时的各项性能指标及系统状态分布。
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An optimization model of net income after tax for single product in productiondistribution supply chain was established.
供应链是包括供应、制造、销售活动在内的物流、资金流、信息流一体化的公司网络系统·为满足供应链的整体目标,供应链中的公司可适当调整产品的交易价格,如采用转移价格、价格折扣、返点等方法实现[1~7]·文献[1]给出了一个优化跨国公司税后净收入的跨国供应链模型,建立了一个启发式解法,对原问题调整后应用连续线性规划进行了求解·文献[2]研究了公司内转移价格作为一种协调机制时的作用·本文在文献[1,2]的基础上,分析并建立了一个单产品生产销售供应链中总公司的税后净收入优化模型;最后,应用改进的进化规划算法进行了仿真实验计算·1
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Starting from the study on 8 typical, open and sealed faults in Yanqi Basin, by using integral seismic-geologic methods, such as fault stress analytical method and fault smearing method, it is found out that the critical values of the fault as it is vertically and horizontally opened and sealed are 0.3333 MPa and 5 MPa respectively. It is pointed Out that because times and vertical and strike positions of the fault are different, the fault seal properties are different.
从焉耆盆地所开展的8条比较典型的开启或者封堵的断裂的研究入手,利用地震地质综合研究的方法―"断面应力分析法"和"断面物质涂抹法",发现该盆地内的断裂在横向上和垂向上开启或者封堵时的"临界值"分别为0.3333和5 MPa,指出断裂的封堵性因其形成的时间、垂向上所在的部位和走向上所在的位置等方面的不同而不同。
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At first in the preliminary design this paper computes the linear damping coefficient of the viscous damper employed in this project using Composite Response Spectra approach, meantime, this paper proves that reducing the exponent of velocity of the piston can increase the magnitude of the dissipative energy, because of the viscous damper employed in the practical project character nonlinear behavior; next this chapter performs analysis and comparison between the building without and with the viscous dampers aforementioned when the building suffers from various Time Domain Response, from the angle of displacement, interstroy drift, velocity, interstory velocity, acceleration, energy, maximum axial force of the dampers and of the column etc., in order to prove that the incorporating the viscous dampers into the buildings has great superiority on enhancing its aseismic performance ; furthermore, this chapter also expatiates on diverse assembly form of the viscous dampers that results in the adverse impact on the internal force of the structural member in this building, on the ground of which this segment bring about the preference of the assembly form of the viscous damper; finally this chapter points out the sphere of application of the analysis and computation using Composite Response Spectra approach in design: it is available in well-proportioned stiffness structures and isn抰 available in the structures that contain weak story. It is recommendable, particularly, to incorporate the fluid viscous dampers into this structure that contain weak story to refrain earthquake and reinforce, such as the Central Hall of Shanghai Exhibition Hall.
首先使用了反应谱分析法设计出欲附设的粘滞阻尼器的线性阻尼系数,由于实际工程所用的粘滞阻尼器具有非线性的特性,故而笔者又证明了降低速度指数对提高粘滞阻尼器的耗能量的优势所在;接着分别从位移、层间位移、速度、层间速度、加速度、能量、最大阻尼出力和柱轴力等不同的角度对结构在附设粘滞阻尼器前后的时程反应进行了分析对比,籍此在实际工程中证明了附设粘滞阻尼器对于提高结构的抗震性能的优越性;再者,笔者还阐述了采用不同的粘滞阻尼器布置方式对结构中构件内力特别是柱轴力和基座竖向反力产生的不利影响,并在此基础上提出了布置方式的优选;最后,指出了反应谱法在设计中的适用范围:对于均匀结构反应谱法能够使用,而对于含有薄弱层的结构反应谱法并不适用;对于类似于上海展览馆中央大厅的含薄弱层的结构尤其值得使用粘滞阻尼器的方法进行抗震加固。
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When processing the restrained conditions, we convert the restrained conditions into punish function and add it to fitness function which profits from the conventional method. We introduce the support vector machine to the selection operator, which increases the multiplicity of selection and increases the probability of the algorithm getting the overall optimal solution. Also, we use the adaptive probabilities of crossover and mutation in mixed GAs which enhances the efficiency of the algorithm. The result of tests about the system indicates that the improved genetic algorithm has more high convergence speed and better solution quality.
在生成初始种群时,不是简单的随机生成,而是用支持向量机对历史数据进行分类,用较优的一类历史数据作为初始种群;在约束条件的处理上,本文借鉴常规方法中的罚函数法,采用将约束条件作为罚函数包含到适应度评价中去的方法;在选择算子上,本文引入了支持向量机的方法,增加了选择的多样性,增加算法搜索到全局最优解的概率;同时针对交叉概率和变异概率在算法的前后期不同的情况,本文引入了Srinvivas等提出的动态自适应的方法,使得交叉概率和变异概率能够随着算法中个体的质量动态改变,提高算法的效率。
- 推荐网络例句
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Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.
最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势,并设计了一款彩色夜视摄像机。
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Only person height weeds and the fierce looks stone idles were there.
只有半人深的荒草和龇牙咧嘴的神像。
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This dramatic range, steeper than the Himalayas, is the upturned rim of the eastern edge of Tibet, a plateau that has risen to 5 km in response to the slow but un stoppable collision of India with Asia that began about 55 million years ago and which continues unabated today.
这一引人注目的地域范围,比喜马拉雅山更加陡峭,是处于西藏东部边缘的朝上翻的边框地带。响应启始于约5500万年前的、缓慢的但却不可阻挡的印度与亚洲地壳板块碰撞,高原已上升至五千米,这种碰撞持续至今,毫无衰退。