查询词典 tangent

Relative dielectric permittivity and loss angle tangent among them are the two of most important indexes.

相对介电常数和介质损耗角正切是其中的两个重要的性能指标。

Therefore, the study on the dielectric loss tangent electriferous monitoring technique of capacitive-type equipment is of practical values.

因此，对电容型设备介质损耗角进行带电检测技术的研究具有重要意义。

As the special characteristic of nonlinearity, several notions are introduced and used in this paper, such as differential manifold, vector field, diffeomorphism, tangent space, topological equivalence. Stable manifold and unstable manifold are also introduced.

针对非线性的特殊性，本文专门介绍了非线性中几个比较特殊的概念，如微分流形、向量场、微分同胚、切空间以及等价关系等，对稳定和不稳定流形也作了介绍。

In differentiable manifolds, one studies for instance differentiable structure, definition of differential manifolds, diffeomorphism, tangent space, Embedding theorem, partitions of unity etc.

微分流形部分主要涉及微分结构，微分流形的定义及例子，可微映射，微分同胚，切空间与余切空间，流形的嵌入，单位分解定理等。

The first proposes that any differentiable function defined on an interval has a mean value, at which a tangent line is parallel to the line connecting the endpoints of the function's graph on that interval.

第一个定理指出，定义在一个区间上的任何可微分的函数都有一个平均值，在该点的切线与该区间上函数曲线两端的联机平行。

The system parameters are determined by optimizing an output-error cost function. To deal with the non-uniqueness of the fully parameterized state-space system, a projected gradient search algorithm is presented by restricting the update of the parameters to the tangent space to the manifold of observationally equivalent state-space systems. The sufficient condition to employ L-M algorithm for optimizing parameters is also introduced. The proposed hierarchical optimization identificationmethod includes two steps: First, the parameter search direction is determined by the proposed adaptive L-M projected gradient approach; Second, the optimum step size is computed according to a line search method.

通过极小化输出误差目标函数获得了系统参数估计；提出了正交梯度搜索方法用于解决系统参数的非唯一性问题，正交梯度搜索的本质是在输入-输出等价类相切平面的正交垂空间更新系统参数；给出了用 L-M 算法进行参数优化的充分条件；提出的系统参数递阶优化辨识方法包括两步：首先用给出的自适应 L-M 算子正交梯度方法确定参数优化方向；其次由一维搜索方法计算最佳步长。

What sound accompanied the union of their tangent, the disunion of their centrifugal and centripetal hands?

385伴随着他们那相接触的手的结合，他们那离心的和向心的手的分离，传来了什么响声？

Ground loss model of tangent double circles is adopted to establish a uniform ground movement pattern of shield tunnel by introducing the coordinate parameter of movement focus.

土质软硬决定了隧道周围土体的移动方向，移动焦点在隧道中心点与隧道底部位置之间变动。

Is a joint-stock enterprise specializing in series of Platen Impress Tangent Cutters and Dual-purpose computer Blocking Mould Machines.

公司简介：本公司是一家专业生产平压压痕切线机与电脑烫金模切两用机系列产品的股份合作制企业。

The high waistlines, which extend from the front to the sides and all the way to the rear, together with the clean and sleek side tangent lines, reveal a personality that is both tough and yet endearingly gentle.

高挑的腰线从车头划过车侧直达车尾，一气呵成，与流畅利落的车侧切线相互辉映，给人刚柔并济之感。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。