In this paper seismic inversion of elastic parameters in horizontally layered VTI ( transverse isotropy media with vertical symmetry axis ) is well studied on the basis of seismic wave kinematics theories in transverse isotropic media with vertical symmetry axis .

根据地震波在具有垂直 对称 轴的横向各向同性（VTI）介质中的运动学特征，应用传播时间反演方法，进行了水平层状VTI介质的地层弹性参数反演方法研究。

A Symmetry Axis Detected Method Based on the Minimal Value of Moment of Inertia

基于极小惯量的灰度 图像 对称 轴检测方法

The same problems also exist in the pile groups and the direction of unidirectional horizontal loading is along the symmetry axis of the pile level layout .

对于群桩的研究也存在同样的问题，并且水平单向荷载的作用方向一般沿着群桩水平布置的 对称 轴 方向。

In this paper according to the characteristics of seismic wave in VTI ( Transverse isotropy media with vertical symmetry axis ) media we calculate the travel time of seismic wave in VTI and synthesize the reflective seismic wave record by using ray trace method .

本文根据VTI（具有垂直 对称 轴的横向各向同性）介质中地震波的运动学特征，应用射线追踪方法，计算了VTI介质中的地震波的旅行时，并合成了反射波地震记录。

In this paper the forced rolling movement about the symmetry axis at a fixed angle of attack is numerically simulated .

采用数值模拟方法模拟了乘波 飞行器在固定迎角下绕其 对称 轴强迫滚转运动这一过程。

The texture mapping method is based on photogrammetry and constrained parameters using the feature which is the moment of inertia that the symmetry of the rigid body has a minimum in dynamics finding the symmetry axis of the three-dimensional model .

该方法在摄影测量学和约束参数纹理映射方法的基础上，利用动力学中轴对称的刚体对于其 对称 轴的转动惯量取得极小值的特性，确定三维模型待 映射区域的 对称 面。

It is pointed out that the demonstration is right on the nonexistence of5-fold and greater than ( 6-fold ) symmetry axis in crystal lattice by double axis .

指出晶格不具备五度及六度以上 对称 轴的双轴证明是正确的。

The warhead is one of the most important parts of a missile . Symmetry axis is an important geometric specificity of it which affects the hit precision of a missile ; therefore it is significant to study measuring techniques of symmetry axis .

导弹弹头是导弹的最重要的部件之一，而 形心 轴线作为其重要几何特征量，影响着导弹的命中精度，因此对于形心轴线测量方法的研究具有实际意义和应用价值。

We studied that the transfer matrix ABCD theorem for the passage of paraxial rays or the optical system possessing a rotational symmetry axis can be generalized for the skew rays propagated off-axis whether the optical system possessing rotational symmetry axis or not .

本文推广了几何光学近轴光线传输的ABCD定理，使之适用于远离 光轴的空间光线的传输，无论光学系统是旋转 对称的还是非旋转对称的。

A Definiteness and an Expansion of the Theorems of a Symmetry Axis in Graph Theory of Molecular Orbitals (ⅰ) The Factorization Theorems of Eigen Polynomial

分子轨道图形理论中 对称 轴定理的明确和扩展&（Ⅰ）本征多项式分解定理

Electromagnetic Radiation Field of Evenly - charged Thin Disk Rotating Around Its Symmetry Axis

绕 对称 轴转动的均匀带电薄圆盘的电磁辐射场

The vortex core radius is calculated by an easily determined characteristic parameter i.e.The distance from the position of the maximum water-surface curvature to the vortex symmetry axis .

通过一个易于确定的特征参数-旋涡水面线最大曲率点到中 轴线的距离，来间接计算涡核半径的方法。

A method to determine the symmetry axis based on interim principle axis is presented in this paper .

本文给出了基于转动惯量主轴确定 轴 对称 物体 对称 轴的方法。

Some strata caused by folds and uprush may tilt TI media will turn to so-called tilted transversely isotropic media ( TTI media ) for the symmetry axis of TI media is no longer horizontal or vertical .

在褶皱和上冲作用下，一些地层发生了倾斜，此时TI介质的 对称 轴不再水平或者垂直，就形成了所谓的TTI介质。

To overcome the shortage of normal elastic wave forward modeling result the numerical solution of quasi-P wave equations in transversely isotropic media with a vertical symmetry axis ( VTI ) was studied .

为克服常规弹性波动方程正演结果的局限，研究了具有垂直 对称 轴的横向各向同性（VTI）介质中准P波方程的数值解法。

Transverse isotropy ( TI ) with a vertical symmetry axis ( VTI ) is the most common model for academic research on anisotropy and prestack imaging of multi-wave and multi-component reflection seismic data .

具有垂直 对称 轴的横向各向同性介质模型（VTI）是目前各向异性理论研究和多波多分量地震资料叠前成像处理中最常用的一种各向异性模型。

The result shows that patterns of body-wave velocity are fixed relative to the symmetry axis and these fixed patterns are closely related to Thomsen 's anisotropic parameters .

研究结果表明，ATI介质中体波速度随传播方向变化的速度图案相对TI 对称 轴确定，此确定的速度图案与TI的Thomsen参数相关；

The method of establishing radial support steel bars based on the symmetry axis of heads to manufacture the melon petal dies was presented .

介绍了以封头 对称 轴为 中心沿径向设置立筋制作瓜瓣封头压制模具的过程。

That is the spatial orientation of TI symmetry axis and surveying line azimuth have an effect on body-wave velocities . The patterns of body-wave group-velocities and phase-velocities are fixed relative to TI symmetry axis and exhibit certain symmetry and repetition of azimuth variation .

研究表明，体波群速度图案和相速度图案相对TI对称轴固定，随TI 对称 轴倾角及其相对测线方位角的变化呈现出一定的对称性和重复性；

The magnetic field in ingot inducted by coil is parallel to the symmetry axis and the magnetic flux density is nearly uniform .

搅拌线圈产生平行于 对称 轴的磁场，其磁感应强度在铸锭部分呈均匀分布；

When the center of the lapping tool in the symmetry axis up ( down ) according to a certain law the radius of the lapping tool will elongation ( shorten ) . Then achieve its point-to-point processing .

当磨具中心在 对称 轴上向上（下）移动时，磨具半径按一定规律作相应的伸长（缩短），即可实现对其母线的逐点加工。

The spatial orientation of TI symmetry axis and surveying line azimuth has the effect on the azimuth variation of body-wave velocities .

并且，TI 对称 轴的空间取向和测线方位影响速度方位变化.相对于TI对称轴，速度方位变化图案不变；

The warheads of medium-long range missiles have some features such as special contour large size and heavy weight etc. thus the measurement of symmetry axis is a kind of large-scale measurement .

中远程导弹弹头具有外形特殊，尺寸和重量都很大等特点，其 形心 轴线的测量属于大尺寸几何测量。

The principle component analysis and face bray center are used to detect the symmetry axis and the valley method is applied to detect and verify the eye candidates .

首先利用主分量分析法和人脸重心确定 人脸 对称 轴，再结合山谷法进行眼睛候选点的提取和验证。

When the symmetry axis is tilted in the TI media the phenomenon of S-wave splitting is clearly observed in the snaps of three components and synthetic seismograms and the events of all kinds of waves are asymmetric .

当TI介质倾斜时，3个分量上均能够观测到横波分裂现象，而且各波形的 同相 轴变得不对称。