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In order to study the numerical method to solve the viscous incompressible flow with free surface, the 3-D mathematical model for steady and unsteady hydrodynamic problem had been established and closed by k-εbuoyant turbulence model. The algebraic coordinate transformation method was used to fit the free surface, the Runge-Kutta method of three step and second precision was devised to simulate the time step. A high precision up-winding compact scheme was studied for the convection term, and the generalized conjugate residual method was set to solve the Poisson equation.

为了研究粘性不可压缩三维问题的数值求解方法，本文从基本的Navier-Stokes方程出发，采用代数拟合方法处理自由表面，用三级二阶Runge-Kutta方法对时间步进过程进行了模拟，并且对对流项的高精度迎风格式进行了研究，给出了求解压力Poisson方程的广义共轭剩余法，从而建立了能够模拟有自由表面的粘性不可压缩问题的定常、非定常三维水动力学模型，并采用k—ε浮湍流模型对其进行封闭。

It's a residual mountain which were a set of thrust blocks under the erosion unconformity. It's reservoir pore space is a fracture-vug-pore system of Ordovician carbonate karst.

该气藏的构造为道冲构造侵蚀而成的残丘山，储集体为奥陶系碳酸盐岩溶蚀缝洞孔体系，流体呈层状分布(集中分布于奥陶系峰峰组和上马家沟组上段)。

A new switching scheme to the gain of variable structure control signals is proposed. The following important open problems in standard VS-MRAC and MRAC are solved by using the scheme: 1 . a prespecified transient and steady-state performance index for tracking error can be achieved without requiring any information about the plant high frequency gain sign when relative degree of modelled part of plant is one, and 2 . it is shown that as long as the performance indexes are guaranteed for the auxiliary errors, each of which in dynamics is a sub-system with relative degree one, the tracing error will converge to a small residual set in a prespecified transient time when relative degree of modelled part of plant is greater than one.

提出了一种控制增益可切换的变结构自适应律，解决了如下变结构模型参考自适应控制（包括基于调参律的模型参考自适应控制）理论研究中长期没有解决的问题：当对象建模部分相对阶为1、高频增益符号未知且存在非线性输入扰动和未建模动态等情况下，系统跟踪误差可满足预先给定的动态和稳态性能指标；当对象建模部分相对阶大于1且存在非线性输入扰动和未建模动态时，可保证系统跟踪误差在预先给定的过渡过程时间内收敛到一个残差集中； 5。

Through the residual signal spectrum analysis and statistics analysis after de-noising, the characteristic frequency of the noise signal was obtained.

通过计算机仿真和实例分析对小波包降噪方法进行验证，表明小波包分析在汽车发动机降噪中有效性。

The numerical results show that outer scale of turbulence has great effect on G-tilt power spectrum and residual variance of tilted tracking at low frequency but almost has no effect on the high frequency.

数值计算结果表明大气湍流外尺度对G倾斜功率谱以及倾斜跟踪残余误差的低频段影响较大，而对高频段的影响可以忽略不计。

The G-tilt power spectrum and the residual variance of tilted tracking as functions of the outer scale of turbulence are deduced theoretically.

详细推导了G倾斜功率谱以及倾斜跟踪残差与大气湍流外尺度的函数关系式。

The coating of this binocular, made in 2000, must be state of the art. Another factor may be a physiological one: The human's eye is optimized for daylight use. After sunset, the spectrum of the residual light is shifting toward the short wavelength side.

另一个影响因素是生理上的：人类的眼镜是为白天使用优化过的，日落后，残留光线的光谱移向短波长那边，IOR的轻微偏黄能补偿这种影响。

Our results show that fitting the spectrum of residual function in FT method gives more accurate rCBF than that of the two SVD methods. But FT method takes more computational time to remove recirculation.

实验结果显示争Q用傅立叶转换法，并对残余函数的频谱加以拟合，所得到的rCBF ，较不易产生rCBF低估的现象，但为了去除再循环的部分，则必须花费较多的时间；而奇异值分解法则容易产生rCBF低估的现象。

The effect of outer scale of atomospheric turbulence on tracking precision of tilted tracking system is studied by considering G-tilt power spectrum and the residual variance of tilted tracking system.

中国科学院光电技术研究所，成都610209 [2]中国科学院研究生院，北京100039文章摘要：从G倾斜功率谱和倾斜跟踪残余误差两个方面分析了大气湍流外尺度对倾斜跟踪系统跟踪精度的影响。

The LP analysis is used again on residual signal to reconstruct the spectrum fine structure.Results Adaptive codebook delay and two codebook gains are tied to build pitch/energy contour feature.

结果该方法通过对残差信号进行线性预测分析，提高了谱包络的精确程度，并从码本增益和延时参数中得到了基音/能量轨迹特征。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐