绝缘

Hence, theoretically analyses on the transmission characteristics of digital jointless track circuit and design software are of great theoretical and practical value.

因此，对数字无绝缘轨道电路进行传输特性分析研究具有重要的理论意义和实用价值。

Firstly, based on the principle of jointless track circuit and the transmission of four-terminal network, parameter models of rail line and cable was established, and their frequency characteristics were analyzed.

首先，本文在简要介绍无绝缘轨道电路工作原理和四端网传输原理的基础上，建立钢轨线路和传输电缆的参数模型，并分析其频率特性。

Secondly, based on analyzing and calculating the normal state of digital jointless track circuit, every voltage of transmission and the adjustment resistance were numerated in this thesis.

其次，对数字无绝缘轨道电路的调整状态进行分析计算，确定出轨道电路传输通道中的各点电压值和调整电阻的大小。

It describes detailedly the working mode of the jointless track circuit, the received theory of inductor and the installation requests too.

论文介绍了轨道电路工作原理和分类，并详细描述了无绝缘轨道电路的工作方式和接收线圈的工作原理以及其安装要求。

The function of railway is very important in our country's economic development, in order to accelerate the development of our country's economy, the Ministry of Railway has developed two kinds of frequency-shift track circuits: 18-information frequency-shift auto-blocking track circuit and UM-71 jointless track circuit, and put them into use on some important lines.

铁路在我国经济发展中发挥着重要作用，为了加快经济的发展，铁道部根据我国国情，研制开发了两种移频轨道电路：18 信息移频自动闭塞系统和UM-71 无绝缘轨道电路，并将其应用到我国部分主要线路上。

Based on the theory of uniform transmission line and four-terminal net circuit, this paper presents a simulation model of ZPW-2000 jointless track circuit shunt current. A kind of numerical algorithm of shunt current is established with MATLAB.

运用均匀传输线和电路四端网理论，建立了ZPW-2000无绝缘轨道电路分路电流的计算模型，利用MATLAB软件实现了分路电流的数值算法。

Our company produces Knurling, Relief, Spurts spreads and many kinds of specifications in asbestos decorative sound absorption board which are the collection in decorative, sound absorptive, sound-insulated, protective from fire, anti-burns, separated the cold heat insulation, energy conservative insulates eight major characteristics to high-level decoration material.

本公司可生产滚花、浮雕、喷涂、等多种规格的矿棉装饰吸声板，是集装饰、吸声隔音、防火阻燃、隔冷绝热、节能绝缘八大特点于一体的高级装饰材料。

The charge accumulation within the insulating SiO_2 substrate changes its surface potential leadin...

像衬度产生的机理主要为SiO2绝缘基底在成像过程中的电荷积累导致的表面电势的变化对于碳纳米管以及周围SiO2基底二次电子发射效率的影响。

In order to minimize those losses, we have to replace the solid conductor with a number of separately insulated smaller conductors twisted together, the Litz conductor.

为了使损耗降到极低，我们用多支细小独立绝缘导体卷绕在一起编成 Litz导体来代替单股导体。

This paper deals with the surge protection of a 220kV H—GIS and analyzes the effects of metal oxide surge attesters on reducing the incoming lightning overvolrages by means of numercal method Meanwhile, there is a kind of over-voltagey which may be rather critical for GIS, e·g·the switching surges with extremely high frequeuly produces by GIS-G switching-off of some loadless duses.

本文讨论220kV混合式GIS变电站过电压保护，用数值计算方法分析氧化锌避雷器对降低过电压的作用，并讨论了有一种类型的过电压可能对GIS要求更为严格，即在主回路中用GIS隔离开关切除空母线引起某些高频操作过电压，因此在绝缘配合时要相应考虑。

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。