下的
- 与 下的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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It is pointed out that,for overcoming time-delay infection of teleoperation of space robot and ensuring the stability and transparency of telerobot system in space,developing strategies should be that ①augmented reality technology with multi-apperception and robustness is adopted for configurative,certain and static environments;②the control technology of intelligent independence in slave local system with vision assistant is adopted for non-configurative, uncertain and dynamic environments;and ③intelligent control technology with multi-modes is adopted for multi-states environments.
指出就目前的技术发展水平而言,要能够有效地克服时延以确保空间机器人遥操作稳定性的同时系统具有良好的操作性能,应该采取的策略是:①在结构化的、确定性的和静态环境下,采用具有鲁棒性的多感知增强现实技术;②在非结构化的、不确定性的和动态环境下,采用视觉引导下的从端局部智能自主控制技术;③在多态环境下,采用多模式智能控制技术。
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The curved grid is taken to constitute a generalized curvilinear system. Thus, the wave equations have to be written in curvilinear coordinates before applying the numerical scheme.
这一映射技术将直角坐标系下的曲界面变换成曲坐标系下的规则界面,在曲坐标系下用伪谱法模拟波场,最后利用插值得到实际波场的合成记录。
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This paper measured the constitutive relation of soil in the condition of the low stain-rate by Split Hopkinson Press Bar technology. It offers the reference for study in high stain-rate in the future. And simulated the explosion between soil and concrete by finite element dynamic analysis software LS-DYNA3D. Finished the numerical simulation for power of exploding between soil and concrete in different position of detonator and different scale model. Set out the curves of displacement, velocity, acceleration and pressure of different position. Obtained the destructibility of concrete target in different explosion condition. It offers data reference for theory studying and engineering designing.
本文首先利用分离式Hopkinson压杆实验技术测定了土在低应变率下的本构关系,为以后进行较高应变率下的研究提供了参考;后面着重利用三维显式非线性有限元动力分析软件LS-DYNA3D对土壤混凝土介质中的爆炸进行了数值模拟,采用土壤混凝土分层介质模型,完成了不同装药位置、不同缩比模型的混凝土模型中爆炸威力的数值模拟,测定了不同情况下的压力曲线及典型位置的质点位移、速度、加速度和压力,得出了混凝土靶在各种不同爆炸条件下的破坏情况,为理论研究和工程设计提供了数据参考。
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The effect of temperature on effective diffusivity and the effect of activation on effective diffusivity are discussed.
实验结果表明,活化状态下该催化剂的有效扩散系数略大于制备态,因此制备态下测得的有效扩散系数可用于活化状态下的计算。
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What differ from that of the researchers in the past is the consideration of the direction of Hopf bifurcation with Dirichlet boundary condition , that is, the conditions when the Hopf bifurcation periodic solutions are orbitally asymptotically stable with asymptotic phase.Our basic idea come from the results given by Tang[30]. We adopt the method used by Hassard in the Hopf bifurcation theorem in [24], which is to judge the existence and the direction of Hopf bifurcation, and the stability of the Hopf bifurcation periodic solutions.
与以前的研究者不同的是,本文不仅讨论了在Dirichlet边界条件下系统的Hopf分支在以扩散系数为分支参数的情况下的存在性和分支周期解的空间非齐次性,而且更多的关注了系统在Dirichlet边界条件下Hopf分支解的稳定性及Hopf分支的方向,也即系统定态解在何种条件下,当分支参数如何变化时产生Hopf分支且分支周期解是带渐近位相轨道渐近稳定的。
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The change of observation error was analyzed in the case of stator flux observer ui model at high speed and in model at low speed when the parameters of motor changed based on the mathematical model in the stationary coordinates.
利用静止坐标系下的异步电机数学模型,分析当电机参数改变时,高速运行状态下定子磁链观测器 u i 模型和低速运行状态下 i n 模型的观测误差变化情况,然后给出定子磁链全阶观测器增益矩阵的确定方法。
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The raw data was processed by using axial, coronal and double oblique multi-planar reformation; Images obtained were graded in terms of quality with a 5-point scale(5=excellent, 4=good, 3=fair, 2=poor, and 1=nondiagnostic). In grading image quality at axial MPR, The radiologic specialists focused on the subarcuate fossa, tendon of tensor tympani, facial recess, vestibular aqueduct and pyramidal eminence, In grading image quality at coronal MPR, attention was given to the scute, crista transversa, fenestra cochleae, lateral malleal ligament and snake eyes signature of cranial nerve, In the grading of the image quality at double oblique MPR, the radiologic specialists concentrated on the malleus, incus, stirrup bone, upper bony semicircular and aquaeductus fallopii, and then to implement statistical analysis. In order to choose the minimum tube current values and the maximum pitch that can satisfy the diagnosis request, image quality of axial, coronal and double oblique reformation images was compared with different tube current groups. 15 ears of volunteers were used to test the validity with the scanning parameter. Subsequently noise, MTF and dose length product were measured by phantoms in different tube current and pitch, the parameters obtained were compared and taken into statistics analysis.
扫描模式使用临床常用的颞骨螺旋扫描方式:管电压120 kV,准直宽度20×0.6 mm,视野200 mm,重建矩阵512×512,旋转时间1 s/r,重建层厚0.6 mm,重建间隔0.3 mm,分别改变管电流(380、300、200、160、120和80 mA)和螺距(0.8、1.0和1.2)进行扫描和重建,然后对颞骨进行横断面、冠状面和双斜面多平面重组,于重组后的横断层面图像上选取弓形下窝、鼓膜张肌腱、面神经隐窝、前庭导水管和锥隆起5个解剖结构,冠状面重组图像上选取盾板、横嵴、蜗窗、面神经的蛇眼征和锤骨外侧韧带5个解剖结构,双斜面重组图像上选取锤骨、砧骨、镫骨、上骨半规管和面神经管5个解剖结构,在双盲的情况下由放射学专家分别对各管电流和螺距下扫描的重组图像进行评分,随后进行统计学处理,从中筛选出满足诊断要求的最低管电流值和最大的螺距,分别采用患者25例(15耳)用该管电流值和螺距验证其可行性;然后利用模体分别测试各管电流和螺距下的图像的空间分辨率、噪声及其剂量长度积,并对测试所得参数数值进行比较和统计学处理。
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The theoretical optimum temperature for the development of eggs,young instar larvae,old instar lar...
本文研究了甘蓝、荷藕、山芋、大豆等不同食料条件下斜纹夜蛾的龄年发育结构的两性生命表参数,在25℃下,这4种食料条件下的内禀增长率分别为0.1836、0.1719、0.1778、0.1206。
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From May 4th Movement of 1919 to the 1920s, sex love narrations in Chinese novels were rather an enlightenment and liberation in that particular era with four characteristics. Firstly, sexual desire was endowed with rationality with regard to liberation of human nature and mutual love. Secondly, with an epochal concern for a stronger and superior race, greater attention was paid to sexual parties concerned, mainly physically. Thirdly, new ethics on sex were promoted in that personal freedom on sex love was emphasized and sex love became an important way of self-fulfillment. Therefore, independence of sex love was advocated and the scope of sex love was also widened. Fourthly, the sex consciousness of this period had the mixed features of the past and the contemporary. Sex love narrations in the 1930s and 1940s showed a further exploration on the theme of human nature. First of all, sex was restored to a kind of desire. ShenCongwen probed the importance of harmonious sex love to a sound personality and Shi Zhecunrevealed that sexual inhibition could lead to the distortion, even frenzy of human nature. Bothexplored the influence and functions of sexual desire as human nature upon human personality,giving prominence to the irresistibleness of sexual desire and the significance of sexual desire asa motive. Then, human bodies driven by sexual desire were described and given greater attentionto. Next, ethics on sex were deconstructed either by Shen Congwen who opposed man-madeethics with law of nature and the School of New Sensation who replaced traditional ethics on sexwith exchange rules in consumption, or by Shi Zhecun who spared no efforts in representing thecomplete failure of social rules, including ethics on sex, due to the impact from sexual desire.The direct effect was a paleness of the ethical binding force on sex. Last, sex consciousness inthe works of female writers emerged. In the early works of Ding Ling, the sexual desire of thefemale is no longer a ramification of emotion but an independent one. In addition, in the sex lovenarrations of other female writers, such as Mei Niang, strong self-consciousness on the socialstatus of the female is also reflected. Sex love narrations in the late 1970s and early 1980s wereactually a re-enlightenment in the spirit of humanism, whose major features include humanisticlegitimation of sex love within the boundary of ethics, a blend of sex love narrations withnational concepts and national myths as well as the aesthetic, poetic descriptions of humanbodies etc. In the middle and late 1980s, sex love narrations entered a stage of exploration forpluralism. First, by restoration of sexual desire, writers of this era restored human nature, thevery original state of human being. Different emphasis and tendencies could be seen in differentwriters: looking at sex love dialectically and trying to describe its creative as well as destructivecharacteristics; connecting sex love with violence and trying to reveal the evil side of humannature through it; emphasizing the creativeness of sex love especially in the heritage of"wildness".
从"五四"到20世纪20年代,中国小说的性爱叙事是一种处在时代夹缝中的启蒙和解放,其所表现出来的特点,一是正面赋予性欲望以合理性,这种合理性是在人性解放和爱情前提下获得的;二是在强种育种的时代焦虑影响下小说性爱叙事表现出对物质身体的关注,其焦点主要在体格方面;三是树立起新的性伦理道德观念,表现为强调在性爱问题上的个人选择自由,性爱成为个人自我实现的重要方式,从而赋予人在性爱问题上的独立性,同时还扩大了性爱表现的领域;四,这个时期小说性爱叙事中所表现出的性意识还具有新旧杂糅的特点。30、40年代小说性爱叙事表现出对人性主题的深化与丌拓,首先是把性还原为欲望本身来探索,沈从文从和谐性爱对健全人性的决定作用、施蛰存从性压抑会导致人性扭曲甚至疯狂的角度探讨作为人类本质性欲望的性对人性产生的影响和作用,突出了性欲力量的不可抗拒和作为人类行为的重要动力等方面的内容;其次在叙事中表现出对欲望化了的身体的描绘与关注;第三是解构了性的伦理道德,无论是沈从文以自然法则来反对人为的道德设置还是新感觉派用消费交换原则替代传统性伦理道德,或是施蛰存极力表现包括性伦理规范在内的社会法则在性欲力量冲击下溃不成军,其直接的效果都是使性伦理道德对人的约束力量显得苍白虚弱;第四,出现了由女性作家表现的女性性意识,在丁玲的早期作品中女性的性欲望不再是作为感情的衍生物而是独立的欲望存在,而在梅娘等其他女作家的小说性爱叙事中则表现出对女性社会地位的强烈自觉意识。70年代末80年代初期小说的性爱叙事实际上是在人道主义语境下的再次启蒙,其主要特征一是性爱在人道主义前提下获得合法性,但要求性爱不超出伦理规定的范围;再就是将性爱叙事同国家观念和民族神话相融合;此外还有对身体的描写审美化诗意化等。80年代中后期,小说性爱叙事进入了多元化探索的阶段,作家通过还原性欲望来还原人性、还原人类的本真状态,不同作家笔下表现为不同的侧重和倾向——以辨证的方式看待性爱,写出其具有的创造性力量和毁灭性特征;将性爱与暴力相联系并通过其来表现人性的黑暗;强调性爱的创造性作用,尤其在民族"血性"的传承方面。
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The osmotic coefficients and saturated vapor pressures have been calculated at the different temperatures .The experimental values of the osmotic coefficients for the Li_2SO_4-H_2O system were consistent with the values in the references. The results revealed the rules of the changing in osmotic coefficients and saturated vapor pressures with ion strengths and the molality fractions of Li_2B_4O_7 at different temperatures. The isopiestic equilibrium molalities were correlated by using the modified and the extended Zdanovskii rules for non-ideal mixtures, and obey well the Zdanovskii rules. The ion interaction parameters of Pitzer model have been determined by using the two methods for Li_2SO_4-Li_2B_4O_7-H_2O at 298.15K system.
本文计算了不同温度下该纯盐体系和混合盐体系的渗透系数和饱和蒸汽压,并将298.15K下的纯盐溶液渗透系数的实验值与文献值进行比较,取得了相一致的结果;揭示了不同温度下渗透系数和饱和蒸汽压随离子强度及Li_2B_4O_7质量摩尔浓度分数yb的变化规律;本文用Zdanovskii规则修正式和扩展式关联了298.15K下该混合盐体系的等压平衡浓度之间的关系,计算结果表明用这两个方程可以描述该体系在全浓度范围内的等压平衡浓度间的关系。
- 推荐网络例句
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I will endeavour to find you some assistance.
我尽力帮你找人帮忙。
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At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.
起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像,后来回台湾,甚至去年在北京,居然也四处看见她的海报,才惊讶她的魅力之大。
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Ah may dee:You are chinese living in a democratic country.
你是居住在民主国家的中国人吧。