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Based on wave function expansion method, the potential functions of scattered waves are expanded into Fourier-Bessel series; and a set of cylindrical coordinate systems is utilized in such a way that it allows to solve the problem of multiple scattering; the solution is determined by imposing continuity and equilibrium conditions at the soil-pile interfaces.

采用波函数展开法,将散射波的势函数展开成Fourier-Bessel级数的形式,利用一组可以求解多散射问题的圆柱坐标系统和桩土界面处位移连续的条件,以及刚性桩的动力平衡条件,得到问题的理论解。

With the increasing of the rock detritus content, the uniaxial compressive strength and Young's modulus increase; the elastic strain energy index and bursting energy index of studied the rocks increase; the duration of failure decrease.

随着碎屑颗粒粒径的增大,即由砂质泥岩、粉砂岩向砂岩过渡,粗粒的粒柱状矿物逐渐增加,而细粒的片状矿物逐渐减少,岩石的强度和刚性增强,在集中应力作用下,弹性能指数增大,发生脆性破坏的可能性增大及破坏持续的时间变短也更猛烈,岩石的冲击倾向性增强。

Methods and Materials:Sixteen healthy young college students without requiring medical service for lower limb due to injury in past 6 months accept 8 weeks plyometric exercise training. Using nerve conduction velocity test, surface electromyography, isometric dynamometer, electrogoniometer and ultrasonography to detect the change of (1)muscle activation level.(2)number of α-motorneuron.(3)nerve conduction velocity. And the mechanical properties of muscle-tendon complex are including (1)fascicle length.(2)fascicle angle.(3)fascicle curvature in muscle(4)muscle composition and (1)stiffness (2)hysterisis in tendon and electromechanical delay are also analysis.

材料与方法:16位下肢在六个月内没有因为受伤而接受任何医疗协助的,接受8周增强式训练前后,接受使用神经传导检查,表面肌电图,等长肌力测力仪,电子量角器以及高频影像超音波等工具之量测,以了解肌肉活性改变包括(1)肌肉适应情形(2)神经元的改变(3)神经传导速率的变化以及肌肉肌腱复合体的机械特性,包括肌肉(1)肌束长度(2)肌束与深层腱鞘的角度(3)肌束弯曲度(4)肌肉组成,以及肌腱腱鞘复合体的(1)刚性与(2)迟滞现象以及机电传导延迟时间。

Based on the approximation expression of the oil film force of CSFD presented in chapter 6 for the short bearing, effectiveness of the active vibration control of CSFD on the rigid rotor、flexible rotors with one disk and two disks are studied both theoretically and experimentally.

在第六章推导出了CSFD在短轴承π油膜假设下油膜力的计算公式之后,分别从理论及试验两方面详细地分析了CSFD对刚性转子、单盘柔性转子、双盘柔性转子系统的振动进行分段控制的控制作用;讨论了不同的控制规律、切换滞后、切换次数以及转子角加速度等对控制效果的影响,以及在双稳态区切换时转子运动的方向性问题。

Based on the Biot s two-phase theory for fluid-saturated porous media, considering the inertia force of the solid and the liquid, and the coupling function between the solid and the liquid, and the compressibility of the liquid in allusion to the character of the nearly saturated soils. The dynamic governing differential equations are solved by Hankel transform. Then, considering the boundary condition, the dual integral equations of vertical vibration are established which are reduced to Fredholm integral equation of the second kind.

本文基于Biot两相介质动力固结理论,针对准饱和土地基的特点,考虑了流体的可压缩性,土体和流体的惯性及水土之间的耦合作用,运用Hankel变换技术求解动力控制方程,然后按混合边值条件建立起对偶积分方程,并将其化为易于数值计算的第二类Fredholm积分方程,分别研究了准饱和土半空间地基、上覆单相弹性层的准饱和土地基和准饱和粘弹性地基上刚性基础的竖向振动特性。

The features to evaluate the tooth contact quality such as the location of the contact point on the tooth surface, clearance between the meshing tooth surfaces, curve of the transmission error and the path of the contact point are investigated. The accurate geometric representation with non-uniform rational B spline of the worm and the wheel tooth surface is presented then the corresponding program is developed.

根据平面包络环面蜗杆传动的创成方法,建立了包含加工误差的蜗杆和蜗轮的齿面方程,分析了平面包络环面蜗杆传动和平面二次包络环面蜗杆传动的刚性啮合特性如误差对接触点的位置、齿面间隙、传动误差曲线和接触点在齿面上的轨迹的影响。

The main research points are municipal local government state-owned assets business budget research, the comparison and choice of local state-owned assets enterprises budge designing methods, the research of state-owned authorized enterprises budget, classified budget responsibilities of principal body and definition of rights, giving consideration to both budget laws, and enterprises laws, seeking the combination of infelicity and flexibility of budget.

将重点从以下方面进行研究:市一级地方政府国有资产经营预算研究,地方国有资产经营公司一级预算编制方法的比较和选择,国有授权经营单位的经营预算的研究,各级预算编制主体的责任和权利的界定,并兼顾预算法、公司法等法规的要求,寻求预算刚性和柔性结合点等。

Based on the small steepness parameter, three-layer incompressible, inviscid and irrotational fluid system of arbitrary depth is discussed by using the perturbation method, and a unified theory of nonlinear interfacial-internal wave propagation and the approximate nonlinear evolution equations for interfacial-internal elevations are given on the basis of the rigid upper boundary and the flat impermeable bottom.

基于波陡很小的假设下,利用摄动法,讨论了任意深度的二维不可压缩、无黏性、无旋的三层流体系统,在刚性上边界、平底不可渗透条件下,给出了界面内波传播的统一理论以及描述界面内波波剖面的近似非线性演化方程,最后还讨论了几种特殊情形下的近似非线性演化方程。

HIPS MA5210 manufactured by Chevron Phillips Chemical Company LP is of good moldability and good mold release property, which are recommended to produce high impact, hardness and high gloss appearance parts especially for molding of TV, air conditioner, refrigerator, computer, house and office wares.

雪佛龙 -菲利普斯 MB5210 高抗冲聚苯乙烯具有良好的注塑加工性能,良好的脱模性,用其注塑加工的制品具有优良的刚性和韧性,并具有高表面光泽度,不喷涂的产品具有良好的外观质量,该牌号产品广泛用于空调、冰箱和计算机的部件及家庭用品和办公用品等。

Human face is a very complicated, multidimensional and nonrigid pattern, which has very complex physiological structure. What's more, due to people's familiarity with and sensitivity to the human face, it is comparatively difficult to do research of the human face.

由于人脸是一种极为复杂的、多维的模式,也是一种典型的非刚性模式,具有非常复杂的生理学构造,再加上人们对人脸的熟悉和敏感,因而人脸方面的研究相对来说比较困难。

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推荐网络例句

I didn't watch TV last night, because it .

昨晚我没有看电视,因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来,在北京的很多小区里,电梯液晶电视被撤了下来。

I'm running my simile to an extreme.

我比喻得过头了。