网络营销/电子商务词典：网络广告/交互式广告/互联网广告媒体等相关英文词汇（D）
【说明】：下列词汇为网上营销新观察通过多个网站的相关资源整理汇总，并未一一核对词汇内容的准确性，对词汇的解释不代表本站的观点，仅供初步参考，如需要严格考证词汇的意义，请参考互联网相关的专业词典。
Daughter window
an ad that runs in a separate ad window associated with
a concurrently displayed banner. In normal practice, the
content and banner are rendered first and the daughter window
appears thereafter.
Demographics
common characteristics used for population or audience segmentation,
such as age, gender, household income, etc.
Digital signatures
signatures for electronic documents. They establish identity
and therefore can be used to establish legal responsibility
and the complete authenticity of whatever they are affixed
to -- in effect, creating a tamper-proof seal.
Digital Video Server
a robust, dedicated computer at a central location that
receives command requests from the television viewer through
a video-on-demand application. Once it receives this request,
it then instantly broadcasts specific digital video streams
to that viewer.
Display
successful download giving the user an opportunity to see.
DHTML (Dynamic Hypertext Markup Language)
an extended set of HTML commands which are used by Web designers
to create much greater animation and interactivity than
HTML.
Domain name
the unique name that identifies an Internet site. Every
domain name consists of one top or high-level and one or
more lower-level designators. Top-level domains (TLDs) are
either generic or geographic. Generic top-level domains
include .com (commercial), .net (network), .edu (educational),
.org (organizational, public or non-commercial), .gov (governmental),
.mil (military); .biz (business), .info (informational),.name
(personal), .pro (professional), .aero (air transport and
civil aviation), .coop (business cooperatives such as credit
unions) and .museum. Geographic domains designate countries
of origin, such as .us (United States), .fr (France), .uk
(United Kingdom), etc.
DPO (Distinct Point of Origin)
a unique address from which a browser connects to a Web
site on the Internet.
Drill down
when an online user accesses more and more pages of the
Web site, i.e., he or she goes deeper into the content of
the site.
DSL (Digital Subscriber Line)
a high-speed dedicated digital circuit from a given location
to the telephone company's central office, using normal
copper telephone lines. DSL provides a separate channel
for voice and fax, which means that phone calls and faxes
can be carried at the same time high-speed data is flowing
across the line. DSL is a general term that includes several
variations: ADSL (Asymmetric Digital Subscriber Line), ranging
up to 1.5 Mbps; HDSL (High-bit-rate Digital Subscriber Line),
1.5 Mbps; SDSL (Single-line Digital Subscriber Line), 1.5
Mbps; VDSL (Very high-data-rate Digital Subscriber Line),
ranging up to 2.3 Mbps; and RDSL (Rate Adaptive Digital
Subscriber Line), various speeds.
DVR (Digital Video Recorder)
a high capacity hard drive that is embedded in a set-top
box, which records video programming from a television set.
These DVRs are operated by personal video recording software,
which enables the viewer to pause, fast forward, and manage
all sorts of other functions and special applications.
Dynamic ad placement
the process by which an ad is inserted into a page in response
to a user's request. Dynamic ad placement allows alteration
of specific ads placed on a page based on any data available
to the placement program. At its simplest, dynamic ad placement
allows for multiple ads to be rotated through one or more
spaces. In more sophisticated examples, the ad placement
could be affected by demographic data or usage history for
the current user.
Dynamic IP address
an IP address that changes every time a user logs on to
the Internet.
Dynamic rotation
delivery of ads on a rotating, random basis so that users
are exposed to different ads and ads are served in different
pages of the site.
【说明】：上述词汇为网上营销新观察通过多个网站的相关资源整理汇总，并未一一核对词汇内容的准确性，对词汇的解释不代表本站的观点，仅供初步参考，如需要严格考证词汇的意义，请参考互联网相关的专业词典。