电信专业英英词典H-1

 

　　Half Duplex

　　Half duplex is a transmission path capable of transmitting signals in both directions, but only in one direction at a time.

　　HDLC

　　high-level data link control

　　Header

　　The header is control information appended to a segment of user data for control, synchronization¹, routing and sequencing of a transmitted data packet or frame.

　　Hertz (Hz)

　　Hertz is the measurement that distinguishes electromagnetic waveform energy; number of cycles, or complete waves, that pass a reference point per second; measurement of frequency, by which one hertz equals one cycle per second.

　　Horizontal Wiring

　　In a premises² distribution system, horizontal wiring is the connection between the telecommunications outlet³ in work areas and the telecommunications closet.

　　Hub

　　In local area networks (LANs), a hub is a wiring concentrator equipment used in hierarchical star physical wiring topologies. Those directly connected to terminals or other user devices are of ten referred to as local hubs or concentrators. Central hubs are those at the highest hierarchical level. Hubs often provide the means for interconnecting 10BaseT, coaxial or fiber⁴ optic cable LAN segments. Intelligent hubs may implement⁵ multiport bridging and network management functions.

　　HVAC

　　heating, ventilation and air conditioning

　　Home Page - The Web document that your browser⁶ displays when you access a site - typically the main page of a Web site.

　　Host - A computer directly connected to the Internet. Also refers to a computer on a network that provides services to other computers on the network.

　　HTML - See HyperText Markup⁷ Language

　　HyperText Link - A connection between two Web documents; usually underlined text or a graphic⁸ that you click on to display another Web document.

　　HyperText Markup Language (HTML) - The basic coding language used to create WWW documents.

　　HyperText Transport Protocol (HTTP) - The protocol for moving HyperText files across the Internet

　　HTTP - See HyperText Transport Protocol

1 synchronization   

n.同一时刻；同步；使时间互相一致；同时性

参考例句：

• Communication record: the function supports synchronization record during the communication process. 通话录音：支持通话过程的同步录音。 来自互联网
• Synchronization is an important problem of digital audio watermarking. 同步性是数字音频水印的一个重要问题。 来自互联网

2 premises   

n.建筑物，房屋

参考例句：

• According to the rules,no alcohol can be consumed on the premises.按照规定，场内不准饮酒。
• All repairs are done on the premises and not put out.全部修缮都在家里进行，不用送到外面去做。

3 outlet   

n.出口/路；销路；批发商店；通风口；发泄

参考例句：

• The outlet of a water pipe was blocked.水管的出水口堵住了。
• Running is a good outlet for his energy.跑步是他发泄过剩精力的好方法。

4 fiber   

n.纤维，纤维质

参考例句：

• The basic structural unit of yarn is the fiber.纤维是纱的基本结构单元。
• The material must be free of fiber clumps.这种材料必须无纤维块。

5 implement   

n.(pl.)工具，器具；vt.实行，实施，执行

参考例句：

• Don't undertake a project unless you can implement it.不要承担一项计划，除非你能完成这项计划。
• The best implement for digging a garden is a spade.在花园里挖土的最好工具是铁锹。

6 browser   

n.浏览者

参考例句：

• View edits in a web browser.在浏览器中看编辑的效果。
• I think my browser has a list of shareware links.我想在浏览器中会有一系列的共享软件链接。

7 markup   

n.加价，涨价，利润

参考例句：

• This mean that international delivery will line markup from today.这意味着国际快递将从今天起全线涨价。
• Our products are expensive,and distributors and retailers always want a large markup.我们的产品很贵，经销商和零售商总是要求高额利差。

8 graphic   

adj.生动的，形象的，绘画的，文字的，图表的

参考例句：

• The book gave a graphic description of the war.这本书生动地描述了战争的情况。
• Distinguish important text items in lists with graphic icons.用图标来区分重要的文本项。