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  含量
     SNP Screening in the Related Candidate Gene for IMP Contents of Chicken and Its Application in Assessment of Genetic Structure of Indigenous Chicken Breeds
     鸡肉IMP含量相关候选基因SNP筛查及其用于地方鸡种群体遗传结构分析的研究
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     Initial Study of Change of Syndrome's Regularity and Change of CGRP and ET in the Stage of Acute Cerbral Infarction
     缺血性中风急性期的证候演变规律与血浆CGRP、ET含量变化及意义
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     CHANGES IN THE NUCLEIC ACID AND PROTEIN CONTENTS DURING THE GROWTH OF THE ROOT TIPS OF PEA SEEDLINGS
     在豌豆幼苗根尖生长过程中核酸和蛋白质含量的变化
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     HADRONIC PRODUCTION OF J/■、■(3684) AND THE CONTENT OF THE CHARMED STRATONS IN THE SEA OF THE STRATONS
     J/■、■′(3684)的强产生与粲层子在“层子海”中的含量
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     THE INFLUENCE OF SOCIAL ISOLATION ON BEHAVIOR IN RATS AND ITS RELATIONSHIP TO MONOAMINE NEUROTRANSMITTERS CONTENT IN THE BRAIN
     群体隔离对大白鼠行为的影响及其与脑内单胺类神经介质含量的关系
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  地区
     Study on Grazing and Utilization of Goats on a Shrubland in the Three Gorges Region of Yangtz River
     长江三峡地区灌丛草地山羊放牧利用研究
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     Research on Sustainable Development of Agriculture in the Upper Reaches of the Yangtze River
     长江上游地区农业可持续发展研究
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     Study on the Indoor Thermal Environment in Summer for Residential Buildings in the Cold Zone
     寒冷地区居住建筑夏季室内热环境研究
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     Grasshopper Hazard Prediction GIS in the Region around Qinghai Lake
     环青海湖地区草地蝗虫灾害预测信息系统
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     On the Coordinative Development of Environment and Economy in the Upper Reaches of Yangtze River
     长江上游地区环境与经济协调发展研究
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     Clinical Studies on Tangguankang in Treating Coronary Heart Disease Complicated by Type 2 Dlabetes Mellitus and in the Influence on the Levels of sICAM-1,sVCAM-1,IGF-1 and VEGF in Plasma
     糖冠康治疗2型糖尿病合并冠心病及对血浆sICAM-1、sVCAM-1、IGF-1和VEGF水平影响的临床研究
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     Reversible Histone Acetylation/deacetylation Modification by p300/HDACs is Involved in the Regulation of IL-12/IL-18 Transcriptional Activity
     p300/HDAC介导的可逆的乙酰化修饰参与Th1细胞因子IL-12和IL-18基因转录水平的调控
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     Involvement of Spinal GABA_B Receptor Subtypes and GABA Transporter-1 in the Neuropathic Pain on Rats
     脊髓水平GABA_B受体不同亚型及GABA转运体-1在大鼠神经病理性痛中的作用
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     Mechanisms Underlying Serotonin Promote γ-aminobutyric Acid (GABA) Synthesis in the Spinal Dorsal Horn
     5-HT在脊髓水平增强GABA合成的机制
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     A Study on the Expression Level of LOX-1 in the Vascular Wall and Its Early Prevention Effect of Different Drugs in Rabbits with Atherosclerosis
     动脉粥样硬化兔血管壁LOX-1表达水平及不同药物对其早期干预作用研究
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  治疗
     Clinical Significance of Molecular Diagnosis of Micrometastatic Tumor Cells in Lymph Nodes in the Surgical Treatment of Patients with Stage Ⅰ Non-small Cell Lung Cancer
     Ⅰ期非小细胞肺癌淋巴结微转移分子诊断在肺癌外科治疗中的作用
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     Clinical Studies on Tangguankang in Treating Coronary Heart Disease Complicated by Type 2 Dlabetes Mellitus and in the Influence on the Levels of sICAM-1,sVCAM-1,IGF-1 and VEGF in Plasma
     糖冠康治疗2型糖尿病合并冠心病及对血浆sICAM-1、sVCAM-1、IGF-1和VEGF水平影响的临床研究
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     Adenovirus-Mediated Cytosine Deaminase(CD) Gene Transfer in the Treatment of Pancreatic Cancer
     腺病毒介导胞嘧啶脱氨酶(CD)基因治疗胰腺癌的实验研究
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     Effect of Fastigial Nucleus Stimulation on DNA Damage and Repair with Stroke in Rats and Patients 2.DNA Damage and Repair in the Blood of Patient with Ischemic Stroke
     1.电刺激小脑干预脑卒中后DNA损伤与修复的实验与临床研究 2.电刺激小脑治疗卒中后抑郁的临床研究
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     Studies of the Molecular Pharmacological Action Mechanisam of VOMbP in the Treatment of Allergic Rhinitis
     辛夷挥发油治疗过敏性鼻炎的分子机理研究
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    We use the theory of tilting modules for algebraic groups to propose a characteristic free approach to "Howe duality" in the exterior algebra.
          
    This study was continued in the paper [FKRW] in the framework of vertex algebra theory.
          
    In the present paper we study the remaing nontrivial case, that of a negative central charge-N.
          
    In the case of 4-dimensional anticommutative algebras a construction is given that links the associated cubic surface and the 27 lines on it with the structure of subalgebras of the algebra.
          
    In the case of 3-dimensional commutative algebras a new proof of a recent theorem of Katsylo and Mikhailov about the 28 bitangents to the associated plane quartic is given.
          
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    In ordinary sampled-data control systems the system response to a step input can reach its equilibrium state only within n or more sampling intervals (n is the order of the controlled plant). In this paper multiple-impulses are used, instead of ordinary simple impulses, to speed up the system response. In such sampled data systems the system response to step input can reach its equilibrium state within less than n, even one, sam-pling intervals. Methods of design of such kind of sampled-data systems and their...

    In ordinary sampled-data control systems the system response to a step input can reach its equilibrium state only within n or more sampling intervals (n is the order of the controlled plant). In this paper multiple-impulses are used, instead of ordinary simple impulses, to speed up the system response. In such sampled data systems the system response to step input can reach its equilibrium state within less than n, even one, sam-pling intervals. Methods of design of such kind of sampled-data systems and their com-ponents are discussed. In the last part of the paper methods of compensating sampled data systems with dead time elements is also considered.

    在通常的脉冲控制系统中,当输入信号是阶跃函数时,系统的过渡过程至少在n个采样周期内才能完全结束(n是控制对象的阶数).文中考虑了采用宽度不等的多拍脉冲代替通常的单拍脉冲以加快系统的过渡过程.在采用多拍脉冲以后,系统的过渡过程可以在少于n个采样周期内,甚至在一个采样周期内完全结束.文中叙述了这种脉冲系统的综合方法,也讨论了系统中有关组成部分——脉冲组成器和校正装置——的构成方案及其参数的计算方法.最后并考虑了由于时滞引起的对系统动态特性有害影响的补偿问题.文中举有例题,对文中各节内容作必要的说明.

    In this paper the general synthesis problem of optimal control systems with the criterion of transient responses as a positive integral functional (3) is discussed.In the first part it is assumed that the motion of controlled object is described by a system of ordinary differential equations and that the final states of the system form a bounded and closed convex region in n-dimentional euclidian phase space. A method is proposed for finding all optimal control functions which lead any starting state into the...

    In this paper the general synthesis problem of optimal control systems with the criterion of transient responses as a positive integral functional (3) is discussed.In the first part it is assumed that the motion of controlled object is described by a system of ordinary differential equations and that the final states of the system form a bounded and closed convex region in n-dimentional euclidian phase space. A method is proposed for finding all optimal control functions which lead any starting state into the given final region of states. Some conclusions are obtained from the maximum principle by using transversal conditions of optimal trajectories in terminal points, and the particular properties of the stated problem are pointed out. The case of linear dif-ferential equations with integral quadratic functional criterion is investigated in detail.Further, in the second part the fundamental properties of isoloss regions, the rela-tions between the isoloss region and optimal control functions are indicated. As a direct result a partial differential equation determining the optimal loss-function J (x) is found and the connection between function J (x)and optimal vector control function u (x) is also stated. The methods proposed are practically the extension of the me-thods used by us for designing time optimal control systems as seen in [5, 6 ,7].Finally, an example is illustrated with optimal trajectories shown in phase plane.The necessary numerical data is calculated by an analog computer with high accuracy.

    文中研究了具有公式(3)表示的一般正积分泛函的最优控制系统的综合问题.在第一部分中研究了具有控制参数的一阶微分方程组.控制系统的终点状态为n维相空间内的某一逐段光滑边界的闭性区域Ω.文中指出了根据极大值原理和轨道终点的横截条件寻找引到Ω的所有最优轨迹的方法.这里详细地研究了具有二次泛函和被积函数中不明显含有控制参数的质量指标泛函的线性方程情况.在文中第二部分研究了等损耗区的主要特性.指出了等损耗区与最优控制函数之间的关系.导出了求算最优损耗函数J(x)的偏微分方程,以及这一函数与最优控制函数u(x)的关系.上述方法是我们曾在文献[5,6,7]中用过的最优快速系统的综合方法的推广.文章最后举有例证.

    Emission and absorption band spectra of sulphur dioxide were studied in the region between 2600 to 2000 A.U. A new system of emission bands (about 150 bands) was found. When these bands were compared with the absorption bands and Mr. Lotmar's fluorescent bands, coincidences were found which amount to 40% and 50% of the total number of absorption and fluorescent bands respectively. These agreements and the very different structure as compared with the SO bands recorded on the same plate made it very probable...

    Emission and absorption band spectra of sulphur dioxide were studied in the region between 2600 to 2000 A.U. A new system of emission bands (about 150 bands) was found. When these bands were compared with the absorption bands and Mr. Lotmar's fluorescent bands, coincidences were found which amount to 40% and 50% of the total number of absorption and fluorescent bands respectively. These agreements and the very different structure as compared with the SO bands recorded on the same plate made it very probable that SO2, is the emitter of these emission bands. Evidences were also found that these emission bands arc not the known bands of O2, Oa+ and S2 in the same region. As a further support a vibra-tional level scheme was worked out, using the three fundamental frequencies of the normal SO2, molecule (1150, 525, and 1360 cm-1) in the lower state and 750 and 350 cm-1 (possible also 1110 cm-1) as the frequencies in the upper state. This scheme accounts for 1Q% of the absorption bands, 70% of the emission bands and a small fraction of the fluorescent bands. While the scheme may not be the final due to the complexity of the vibrational formula, one feels fair, as far as the present evidence goes, to conclude that the emission bands observed are actually emitted by the SO2, molecules and that they can be fitted by a vibrational level scheme based on the three known fundamental frequencies of the normal state.

    此文目的在报告二氧化硫气体分子之吸收光谱及发射光谱(emission speetrun)之研究光谱区域约在2000A与2600A间有一新组发射光带(band)发现。数约百五十在吸收光带中有百分之四十之光带与此发射光带附合。在Lotmar先生之弗光光谱(fluorescent speetrum)中,有百分之五十之光带与此发射光带附合并此所得之发射光带之结构与SO之光带显有区别,令人设信此发射光带为SO_2分子所发者。在另一方面,找到证据,所得之发射光带亦非0_2,O_2~+及S_2诸分子之光谱为求更进一步之证实,试以SO_2之三基本振动数(fundamental frequency)1150,525及1360cm~(-1)为能力阶梯之差而作一常态(normal state)下之能力阶梯。再用750,350cm~(-1)(或1110亦用)为分子在激态(excited state)时之振动数,而作一激态下之能力阶梯所得之能力图(energydiagram)可说明吸收光带之70%,发射光带之70%及弗光光带之一小部份,此能力图并不完全,故不能望其为最终者。以三原子分子情形复杂,完全正确之分析,尚有待焉。之 能 力唯协...

    此文目的在报告二氧化硫气体分子之吸收光谱及发射光谱(emission speetrun)之研究光谱区域约在2000A与2600A间有一新组发射光带(band)发现。数约百五十在吸收光带中有百分之四十之光带与此发射光带附合。在Lotmar先生之弗光光谱(fluorescent speetrum)中,有百分之五十之光带与此发射光带附合并此所得之发射光带之结构与SO之光带显有区别,令人设信此发射光带为SO_2分子所发者。在另一方面,找到证据,所得之发射光带亦非0_2,O_2~+及S_2诸分子之光谱为求更进一步之证实,试以SO_2之三基本振动数(fundamental frequency)1150,525及1360cm~(-1)为能力阶梯之差而作一常态(normal state)下之能力阶梯。再用750,350cm~(-1)(或1110亦用)为分子在激态(excited state)时之振动数,而作一激态下之能力阶梯所得之能力图(energydiagram)可说明吸收光带之70%,发射光带之70%及弗光光带之一小部份,此能力图并不完全,故不能望其为最终者。以三原子分子情形复杂,完全正确之分析,尚有待焉。之 能 力唯协所得之能 力 圆 山。。。,。w山。…。。。。\可。Z5t 叫 吸收 几 卅之70九传 时 光排 上 7,%及 比 儿 儿 卅上 一 个 部 份 此 能 力 闲 伙 不 正 全;故个能 望IC iX侦相 许 nt原一户 外 广似形 应 输,完全 正雕之分 析。尚有

     
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