开关

The configuration scheme of lightning arrestor protection for converter station, the principle of insulation coordination and overvoltage protection strategy for converter station are analyzed; the parameters and characteristic of lightning arresters are calculated; after analyzing the overvoltage protection for equipments and insulation level of equipments in detail, the discharge voltage of air clearances in converter station is given preliminarily.

自2005年国家电网公司部署建设±800kV直流特高压输电工程以来，组织国内外直流专业公司、科研院所、设计单位开展了广泛的研究工作[1-5]。从主接线方案的比较、户内外直流开关场的选择到绝缘裕度的确定，都从绝缘配合设计的角度进行了研究和比较，取得了大量研究成果[6-11]。

Simultaneously, the system also has with the computer asynchronous serial communication interface based on the programmable logic device CPLD.

系统包括模拟开关、测量放大器、AD转换器、CPLD中心逻辑控制器、掉电数据保存单元，系统实现了通过CPLD编程完成与计算机串口间异步串行通信功能。

At the stroke of midnight, they all "flipped their lids" and the year on their foreheads lit up in conjunction with the numbers "1908" on the parapet of the Times Tower lighting up to signal the arrival of the new year.

在午夜敲响钟声的那一刻，他们都纷纷"打开帽子开关"，他们额头上的小灯和时代塔栏杆上点亮的1908字样交相呼应，迎接着到来的新的一年。

At the turn of a switch, we can see what are taking place a mile away.

一打开开关，我们就可以看见一英里处正在发生的事情。

There are some information about the development of soft switch and welding machine. There are also introduce some methods about the athwart invert current and how to realize it. At last we introduced the structure of DSP and how to design the module by software.

在本论文中首先介绍了软开关技术和电焊机的一些发展，然后介绍了几种典型的逆变电路和实现逆变的方法，最后讲述了DSP的硬件结构和模块以及控制软件的设计方法了软件中的模块。

Now, we mostly discuss the direct athwart welding machine in this article. We will use the silicon semiconductor of IGBT to control the system. so there are a lot of advantages in the system.

而在此文中我们主要讨论的是逆变直流焊接机，同时这里应用了先进的IGBT可控硅半导体管来进行控制，所以它拥有软开关技术的诸多有点。

I could easily make the jump to a switching pattern in the atomic valences or atomic structure.

我可以很容易使跳到开关格局价态原子或原子结构。

The characteristics of high frequency switch power supply are analyzed. The problems in its application on audio frequency power amplifier and the main methods to solve them are pointed out.

分析了高频开关电源的特点及将其应用到音频功率放大器中所遇到的主要问题，以及解决这些问题的基本方法。

The outlook of high frequency switch power supply in application to high fidelity audio frequency power amplifier is indicated.

指出了高频开关电源在高保真音频功率放大器中广阔的应用前景。

Company products include: analog switches, power management, charge management, video applications, interfaces, security, clock, AD / DA converters, etc., used in digital products (MP3, MP4, PMP, digital photo frames, cameras), communications (GSM, CDMA mobile phone, Bluetooth, network), medical equipment, security, automotive electronics and other fields, but also can provide resistance-capacitance diode and audion IC package surrounding the program.

公司代理的产品包括：模拟开关、电源管理、充电管理、视频应用、接口、安防、时钟、AD/DA转换器等，产品应用于数码（MP3、MP4、PMP、数码相框、相机）、通讯（GSM、CDMA手机、蓝牙、网络）、医疗器械、安防、汽车电子等领域，同时还可以提供阻容、二三极管IC周边方案配套。

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。