坐标系的

It is emphasized that the key problem in tensor analysis is to establish the mathematical equations of physical laws which are invariable when the coordinate system is changed.

在数学上将客观定律用量的分量形式表达为对坐标系具有不变性的方程，是张量分析所要解决的核心问题。

Based on the Frenet-Serret formulas which are very important in the vector and tensor analysis theory, the force and moment equilibrium equations are established by the technique of apparent components system.

以在空间曲线理论中起重要作用的富列耐—塞勒(Frenet—Serret)公式为基础，把BHA所受的力及力矩表示为三维非正交坐标系中视分量的形式，建立了力和力矩平衡方程。

In order to resolve the problem of the coordinates transformation between the WGS 84 and local geodetic system, in this paper, four parameter method with plane constraint and the method based on polynomial approximation are discussed.

GPS定位技术在各个领域中已得到了广泛的应用，而GPS定位成果属于WGS-84地心大地坐标系，致使将GPS地心坐标转换成本地坐标的方法愈来愈得到广大工程技术人员的关注。

The behaviour of the viscous fluid flo w with a free surface is expressed by the unsteady Navier-Stokes equation.For nu merical integration in time domain the velocity correction fractional step metho d is used.

在任意拉格朗日欧拉坐标系下，用非定常不可压的N avier-Stokes 方程来描述粘性带自由面流体的运动，在时间的数值积分中采用了速度修正分步法。

Weak formulation of mixed state equations including boundary conditions are presented in a cylindrical coordinate system by introducing Hellinger_Reissner variational principle.

从Hellinger_Reissner变分原理出发，在柱坐标系中，导出圆柱壳的弱形式混合状态方程和边界条件，联用状态空间法给出叠层柱壳的解析解，此法使得求解该类问题的形式得以扩大和统一。

As a special example, we calculated global errors and reflective coefficient on the interface of quasi-PML in the Cassinian transformation cylindrical coordinates. Numerical results validated the effectiveness of absorbing in quasi-perfectly matched layers for the conformal mapping case.

本文还以Cassinian变换柱形坐标为例，计算了准PML的全局误差和准PML界面中点的反射系数，证实了保角变换柱形坐标系准PML的吸收作用。

The use of new σ coordinate is aimed to match the landform better and improve the instance that the normal σ coordinate mathematic models are emanative with complicated landform sometimes.

分析了在新坐标系下应用k-ε模型可能存在的问题，并从模型的特点出发，以对数流速分布为基础，导出了垂向紊动粘性系数的分布公式。

The development of 2D heteronuclear NOESYis reviewed and a rotating frame HOESY has been designed for detection of NOE correlation in large molecules.

简单回顾了二维异核NOESY实验的发展，设计适合检测大分子中NOE相关的旋转坐标系下的异核NOESY实验。

Topography map of the hip bone displays the depth of all parts of the hip bone and the projection of important blood vessel and nerve onto the hip bone imaginarily and directly.

将坐标系、等厚线和重要血管神经的投影图同时绘制在髋骨上，形成3张地形图，1张为髋骨内侧面地形图，1张为没有血管和神经结构的髋骨外侧面地形图，1张为有血管和神经结构的髋骨外侧面地形图。

A total of 142 sties, 1155 paleomagnetic samples were collected from the Mesoproterozoic successions and Late Jurassic Tiaojishan Formation in Jixian, Xinglong and Kuancheng areas, North China Block.

在各岩石单元普遍存在的低温分量方向在地理坐标系下与现代地磁场方向接近，是现代场重磁化的结果。9 个高温分量受到后期重磁化或构造扰动的影响。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。