地线

Anchor points based Isometric Embedding under least square error criterion has a time complexity of O n log( n , and after obtained geodesic distances it has linear time complexity for embedded points and can be fully realized in parallel.

基于锚点集的最小平方误差等距嵌入算法AIE具有O n log( n 的时间复杂性，而且在获得测地线距离后的计算时间复杂度达到对嵌入点数的线性关系，且可以完全并行实现。

For H-type groups, explicit equations of shortest sub-Riemannian geodesies and a full characterization of the sub-Riemannian isometry groups are given in this dissertation.

对广义的Heisenberg群，本论文给出了最短次黎曼测地线的明确表达方程，并完全刻画了次黎曼等距群。

The problem of sub-Riemannian geodesics is a Lagrange problem with constraint. How to describe the constraint condition "γ'∈ D, a. e." is a difficult problem.

次黎曼测地线问题是变分学中的一个有约束的Lagrange问题，但在变分的过程中有个难点―如何推出约束条件"γ'∈D，在上几乎处处成立"的解析式。

In Gui-Guang DC line Zhaoqing converter station auxiliary power line lightning protection upgrade project,a comprehensive scheme that increases number of composite insulator skirts,adds coupled earth wire and installs line lightning arrester s is adopted.

在贵广直流肇庆换流站站用电源线路防雷改造中，采取了电源线路复合绝缘子加片、增设耦合地线和加装线路避雷器等综合防雷改造方案。

It also can limit the distribution of the electric field in the space which can reduce the radiation loss.

弯曲结构能有效缩小传输线的纵向尺寸，加厚的接地线能够更好地隔断弯曲信号线平行段之间的相互耦合干扰。

We are specialized in Europe and the Mediterranean Sea ,our rate is very competitive in the marketing.

特别是欧地线我们的价格非常有竞争力，另外，公司作为多个船公司在上海地区的订舱代理，为您提供更便捷周到的服务，成为您与船东间的友好桥梁。

Geodesic, which was initially proposed by Bernoulli and ever demonstrated by Gauss, is as a foundational concept in the modern differential geometry and has been used as one of the foundations of all the general relativity. However, it implicates lots of logic paradoxes.

作为构造整个"广义相对论"的形式基础之一，现代微分几何中由Bernoulli最初提出并经过Gauss论证的"测地线"概念隐含大量逻辑悖论。

The lower end of the discharge chamber body is in hermetically-threaded connection with a fixed electrode; an operation electrode is mounted at the upper end of the discharge chamber body; the lower end of the operation electrode can be movably mounted in a conduction fixed ring; a fit clearance between the lower end of the operation electrode and the conduction fixed ring is 0.1 to 0.15mm; the conduction fixed ring is in hermetically-threaded connection with the upper end of the discharge chamber body; the conduction fixed ring is connected with a grounding wire; a discharge chamber is formed between the conduction fixed ring and the fixed electrode at the inner part of the discharge chamber body; the upper end of the operation electrode is fixedly connected with an insulation handle.

本发明公开了一种隔爆放电器，包括由防爆有机玻璃制成的筒形放电室本体，所述放电室本体的下端密封螺纹连接有固定电极；所述放电室本体的上端安装操作电极，所述操作电极的下端可移动地安装在导电固定环内，与导电固定环配合间隙为0.1～0.15mm，导电固定环密封螺纹连接在放电室本体的上端，导电固定环上连接有接地线；在放电室本体的内部导电固定环和固定电极之间形成放电室，所述操作电极的上端固接绝缘手柄。

Then it uses the BiCGStab algorithm to analyze the large network which avoids the inverse matrix computing.

提出一种新的快速分析方法对大规模电源/地线网络进行模拟。

In the United States, a luminaire intended to be connected to the line and neutral grounded conductors of a branch circuit, as shown in Figure 3.7.1.1, and provided with

在美国，灯具要联结到火线上，分支线路的导体要与地线连接，如图 3.7.1.1，所示，应当有

I bought a nice wrist watch as a surprise for my wife's birthday.

我买了一个漂亮的手表想要给我妻子的生日一个惊喜。

We don t expect students to be sponges. You can t expect to absorb everything and not have any questions to ask.

我们并不期待我们的学生是一块海绵，你没可能接收所有的东西而不提出任何问题。