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On the base of analysis concerning Tianjing and Tanggo-Xingang soil properties and observation results of settlements, some rules of settlement of buildings in the area were obtained. Final settlements, settlements at end of construction and the time of final settlement were discussed. Tests used for determining paramcters of four models were introduced. The parameters in Duncan-Chang model are determined from isotropic consolidation test and the parameters in Gong-Xiannan model from Ko consolidation tests while the parameters in the model proposedin chapter 2 from the equal increment stress ratio test and ones in the bounding surface model developed in chapter 3 from the effective stress-path of CIU test.

根据天津市区及塘沽新港地区的地基土质情况以及沉降观测资料,分析了该地区建筑物沉降的一些规律,讨论了最终沉降量,完工时的沉降量以及沉降稳定时所需要的时间,介绍了确定各模型参数所需要的试验:Duncan—Zhang模型参数根据等向固结的三轴试验确定;龚晓南Ko固结模型根据Ko固结三轴试验确定;本文建立的非线性弹性模型根据等向增量应力比试验确定,边界面模型参数可根据固结不排水剪切试验的有效应力路径确定。

The results are as follow:(1) In static status, the velocity of jet flow shows a symmetry distribution through central axis of enclosure.

结果表明,腔体静止时,射流速度沿腔体中心轴对称分布,腔体中心轴上的速度最大,两侧流速逐渐减小,近壁处为零;腔体转动时,在哥氏力的作用下,射流中心发生偏转,流场相对于腔体中心轴不再对称分布,腔体中各点处的流速分布随角速度而变化,压电射流角速度传感器利用这一特性敏感角速度。

Based on MATLAB,this paper explores extraordinary ray 's locus and its features in crystal when uniaxial crystal is turning.

基于MATLAB探讨单轴晶体转动时非常光在晶体内的轨迹及其特征,分析单轴晶体转动一周时非常光的轨迹在晶体内转两圈的条件,利用MATLAB给出这些条件的数值解。

On the basis of direct modelling method by using extended Kalman filter, a new method combining extended Kalman filter with adaptive extended Kalman filter is presented to model gyro drift directly from rotate angle of turntable. Extended Kalman filter has great estimation error, what is more, may be divergent if the model and noise statistic are not accurate or wrong. The new method solves the problem of general extended Kalman filter by using fictious noise with timevarying statistic to compensate the linearized model error of extended Kalman filter. The parameter estimators of single-axis and double-axis servo test are designed from it.

本文深入研究了根据伺服试验数据进行陀螺仪漂移误差模型建模的方法,在应用广义Kalman滤波器直接建模的方法基础上,针对广义Kalman滤波器对于不精确或错误的模型和噪声统计,估计误差较大,甚至滤波发散的缺陷,借助于用带时变噪声统计的虚拟噪声补偿广义Kalman滤波的线性化模型误差的新思想,提出了用广义Kalman滤波和自适应广义Kalman滤波算法相结合的方法由转台的转角数据直接建模陀螺仪漂移误差模型,并设计了陀螺仪单轴伺服和双轴伺服测试时参数估计的滤波器。

Secondly, a conjecture about the stability for these systems is proposed based on the sufficient and necessary condition of the isolated transfer function being positive real. When the zeros and poles of the transfer functions lie in the imaginary axis, a known conclusion is derived from the conjecture; while the zeros and poles are on the real axis, a new result is obtained and is proved in this note. Finally, according to the conjecture, an example with poles existing on the complex plane is presented, which is not only interesting but also challenging.

然后, 基于所有孤立部分传递函数都正实的充分必要条件给出了上述系统为稳定的一个猜想,当传递函数的零极点都位于虚轴上时,由这一猜想得到了一个已知的结论;当传递函数的零极点都位于实轴上时,由这一猜想得到了一个新的结论,本文证明该结论是正确的;最后,根据这一猜想,给出了传递函数极点位于复平面的一个例子,它涉及到一类系数矩阵为时变正定矩阵的振动方程的稳定性问题,值得去深入研究。

Based on the stress analysis to spired axis mechanism,in the aspect of sliding part which smoothes through alveolus intersection, theresearch of parameters optimization, about the middle alveolus of spired axis andthe dimension of sliding part, has been studied. To the problem that the reverseportion at the both sides of spired axis lashed fiercely and fraies quickly, thearticle finely analyses the best curve of alveolus when adding cushiony spring atthe both sides.

在对螺旋轴机构进行受力分析的基础上,从滑块顺利通过齿槽交叉点的要求方面,对螺旋轴中间段齿槽和滑块的尺寸进行了参数优化分析;针对螺旋轴两端曲线齿槽反向段在高速工作时冲击大、磨损快的问题;从减少滑块在齿槽反向段运动的冲击方面,比较分析了圆弧、抛物线、三角函数等曲线作为螺旋轴齿槽反向段曲线的加速度,提出了较优的(来源:ABCab论bf文网www.abclunwen.com)反向段曲线。

An accelerometer was used to record triaxial acceleration while the patient was walking (x-axis: superoinferior direction, y-axis: anteroposterior direction, and z-axis: mediolateral direction).

当病人在步行时加速度计被用来记录三轴的加速度(X轴,上下方向,Y轴前后方向,Z轴,中间外侧方向)。

The term z-map might be a little misleading to those who are not familiar to working in 3D space. In high school geometry class the concept of two-dimensional space: the x-axis represents horizontal space and the y-axis represents vertical space. Whenever you work in packages such as Painter, Photoshop, Commotion, Combustion or After Effects you are working solely in 2-dimensional space. When you work in 3D you have, in addition to the x- and y-axes, a z-axis, representing depth.

z-map这个称呼或许对那些不从事三维空间工作的人来说有一点误导的嫌疑,在高校的几何课里面,关于二维空间的概念,X轴代表着横向空间,而Y轴代表着纵向空间,无论何时你使用例如Painter, Photoshop, Commotion, Combustion 或After Effects这样的软件,你正工作在一个二维的空间,但是在三维空间工作时,除了X轴和Y周,你还要加上Z轴,它代表了深度的概念。

A circle shear device for cutting holes in sheet metal as in claim 1 wherein: a said upper center shaft includes a first platform member disposed rotatably connected adjacent a lower end of said upper center shaft for supporting a top surface of said provided metal sheet; b said lower center shaft includes a second platform member disposed rotatably connected adjacent an upper end of said lower center shaft for supporting a bottom surface of said provided metal sheet; and c said upper and lower support platform members engaging top and bottom surfaces of said provided metal sheet to prevent metal sheet movement when said cutter wheels are brought into shearing contact with said provided metal sheet.

一个圈剪切装置切割孔金属板材作为权利要求1 ,其中: A )表示,上中心轴,包括第一次会员平台弃置rotatably连接相邻较低月底上说,中心轴为支持一个顶面的表示,提供金属板材; B )表示,较低的中心轴,包括第二个平台会员弃置rotatably连接相邻上月底表示,较低的中心轴为支持一个底部表面的说,提供金属板材; C )表示,上,下支撑平台成员从事顶部和底部表面的表示,提供金属板,以防止金属板运动时说,刀车轮被带入剪切接触说,提供金属板材。

The thrust coefficients and propulsive efficiency of a two-dimensional flexible fin with heaving and pitching motion were computed using FLUENT. The effect of different locations of the pitching axis on propulsive performance was examined using three deflexion modes which are respectively, modified Bose mode, cantilever beam with uniformly distributed load and cantilever beam with non-uniformly distributed load.

利用FLUENT软件数值计算了二维柔性鳍作升沉纵摇运动时的推力系数及推进效率,探讨了修正Bose变形方程、均匀载荷和非均匀载荷悬臂梁变形方程等三种柔性模式下纵摇轴位置对摆动鳍推进性能的影响,其中纵摇轴在尾缘处能够获得更大的推力,而最高的推进效率分别对应修正Bose模式下纵摇轴距首缘1/3弦长处和悬臂梁柔性变形模型下纵摇轴距首缘2/3弦长处。

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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。