计算机专业英语阅读材料之二

计算机英语（11）
Packet Internet Groper (PING)
A program used to test whether a particular network destination is online ,by sending an Internet control message protocol (ICMP) echo request and waiting for a response .(Also called packet internet gopher).

包因特网查询工具(PING)
用于通过发送一个Internet控制消息协议(ICMP)回送请求并等待应答来测试一个特定网络目的地是否联机的一种程序。也称作包因特网gopher工具。

计算机英语（12）

Cascading Style Sheets (CSS)
A style sheet mechanism that has been specifically developed for Web page designers and users .Style sheets describe how documents are presented on screens ,in print ,and even in spoken voice. Style sheets allow the user to change the appearance of hundreds of Web pages by changing just one file .A style sheet is made up of rules that tell a browser how to present a document .Numerous properties may be defined for an element ;each property is given a value.

层叠样式表(CSS)
专门为Web网页设计者和用户开发的一种样式表机制。样式表描述了文件怎样显示在屏幕上,怎样被打印出来,甚至怎样用语言说出来。样式表允许用户通过仅更改一个文件来改变数百个Web页的外观。一个样式表由许多告诉浏览器怎样表示一个文件的规则组成。可以为一个元素确定许多特性;每个特性给出一个值。

计算机英语（13）

Y2K
The year that many computers may develop problems because of lack of foresight on the part of programmers .In the 1980s and before ,most computer programs were designed to store only the last two digits of the years on all dates .When the Year 2000 comes ,these programs will show dates of 00,which maybe interpreted the same as 1900.This discrepancy may cause widespread problems ,especially in the large computer systems used in government and big industries.

两千年问题
由于程序员方面缺乏预见性而造成许多计算机可能出现问题的一年。在80年代以及之前,大多数计算机程序被设计成在所有日期上只存储年份的最后两位数字。当2000年到来时,这些程序将显示日期00,这可能得到与1900年相同的解释。这种不一致性可能会引起普遍的问题,特别是在政府和大工业部门使用的大型计算机系统中。

计算机英语（14）

Dynamic HTML (DHTML)
HTML documents with dynamic content ;the three components of DHTML pages are HTML ,JavaScript ,and cascading style sheets .The three components are tied together with DOM ,the Document Object Model.

动态HTML文件 (DHTML)
含有动态内容的HTML文档;DHTML页面的三个组成部分为HTML、JavaScript和层叠样式表。这三个部分与DOM(文档对象模型)联结在一起。

计算机英语（15）

Gopher
A document retrieval system from the University of Minnesota .Through Gopher ,a user can access files from many different computers by looking through hierarchical menus to find specific topics .A document may be a text ,sound ,image ,or other type file .A program called Jughead can be used to search for topics found within Gopher files .Gopher sites can now be accessed through the World Wide Web.

Gopher工具
明尼苏达大学的一个文档检索系统。通过Gopher工具软件,用户可通过浏览分级菜单查找具体主题而从许多不同的计算机中访问文件。文档可以是文本、声音、图像或其它类型文件。可用一种称为Jughead (Jonzy's Universal Gopher Hierarchy Excavation and Display的缩写)的程序来检索在Gopher文件内发现的主题。现在Gopher网址可通过WWW访问。