因为在指定的等待周期内无法获取它，一个弹出式窗口告诉用户获取操作在后台继续执行。
Since it cannot be retrieved in the specified waiting period, a pop-up window informs the user about the background processing.
一个用户可以在听一段音频剪辑的同时滚动页面，而在后台浏览器还在下载着图像。
A user could be listening to an audio clip while she is scrolling a page, and in the background the browser is downloading an image.
因此，可以在后台发出HTTP请求和接收响应，而不会给用户造成任何视觉上的干扰。
Therefore, the HTTP requests can be made and responses received completely in the background and without the user experiencing any visual interruptions.
如果在等待周期结束时获取还没有完成，那么显示如图9所示的弹出式窗口，告诉用户获取操作在后台继续执行。
If the retrieval is not finished at the end of the waiting period, a pop-up window, as shown in Figure 9, informs the user that the retrieval is continued in the background.
禁止它是因为对用户来说，集成在后台进行。
This is disabled because the integration happens in the background for the user.
服务可能会在后台正常运行，而带有用户界面的应用被暂停。
It is possible services to run normally in the background while applications with a user interface to be paused.
用户与门户交互，而门户与各种后台应用程序交互，可以将它们都聚合到一个浏览器窗口（门户页面）中以呈现给用户。
The user interacts with the portal, and the portal interacts with various backend applications, aggregating them all for the user into a single browser window, the portal page.
可以有很多种方法做到这一点：通过发送数据请求到后台，然后把结果展现在前台用户界面上。
This can be done in a variety of ways by sending requests for data to the back-end application and then displaying the results in a front-end user interface.
该层拦截来自用户的请求，然后在后台与服务器通信并异步获得所需的HTTP协议内容。
This layer intercepts requests from the user and in the background, communicates with the server quietly and asynchronously to get the desired content of an HTTP protocol.
这个组件表示用户的当前后台系统。
This component represents a user's current back end systems.
开发者们希望应用能在后台运作，这样接收升级和通告信息就不需要用户启动软件了。
Developers would like for applications to run in the background, so they don't have to be opened to receive updates and alerts.
此后，应用程序将启动后台过程以便获得用户的转发数据。
Next, the application will fire off a background process to obtain the user's retweet data.
服务是一个运行在后台并实现勿需用户交互的任务的控制台程序。
A service is a console application that runs in the background and performs tasks that don't require user interaction.
当用户单击此图标时，一个请求将在后台发往服务器，其中带有用户希望订阅的对话框的相关信息。
When the user clicks that icon, a request goes in the background to the server with information about which box the user wants to subscribe to.
在大多数工作站上，通常都有几个程序在后台运行，即使在用户没有启动任何应用程序时也是如此。
On most workstations, usually several programs always run quietly in the background, even when you've not started any applications.
这类应用程序也很可能与后台系统连接，向用户传递内容。
Such applications are also most likely to be connected to backend systems for the delivery of content to users.
理想情况下，外部用户不应必须注册，甚至不应注意到是新系统在后台管理身份验证。
Ideally, the external user should not have to reregister or even be aware that a new system was managing the authentication behind the scenes.
本质上来说，他们并不关心你的草图、高超的后台技术以及功能强大的服务器，他们只希望看到用户界面。
The bottom line is that they don't care about your sketches or about fantastic back ends or powerful servers. All they want to see is the user interface.
它在后台运行，不提供用户界面。
It runs in the background and does not provide a user interface.
用户并不知道所有这些后台操作。
这些同步都在后台进行，用户进行过初始设置后不再需要进行更改，也不收取额外的信息费。
These syncs occur unobtrusively, and don't require any action on the part of the user after the initial setup, nor do syncs incur any extra fees like text-messaging charges.
Ajax页面可以异步地(Ajax中的a)向Web服务器请求数据，用户完全无法察觉后台正在处理事务。
Ajax pages can asynchronously (the a in Ajax) ask the Web server for data with the user unaware that there is a transaction occurring in the background.
另一个技术挑战是不使用后台线程来保持Buzzword的用户界面响应能力。
Another technical challenge is keeping Buzzword's user interface responsive without the use of background threads.
两个库均使用Ajax来引入交互模型，其中浏览器和服务器间的通信可以在后台异步发生，并对用户不可见。
Both libraries use Ajax to introduce an interaction model where communication between the browser and the server can happen asynchronously in the background, invisible to the user.
您可以使用Ajax在后台处理许多用户交互事件，然后更新页面的各个部分，而无需完整的门户刷新周期。
You could use Ajax to handle many of the user interaction events in the background, and then to update portions of the page, without requiring a full portal refresh cycle.
相反，您可能更希望创建交互报告以便用户能够设置Cognos报告内的参数、在后台自动调用挖掘，然后将结果返回至Cognos。
Rather you would like to create interactive reports that allow the user to set parameters in a Cognos report, invoke mining in the background automatically and then to feed the results back to Cognos.
你可以把invokedynamic看做JVM用户与后台的JVM进行直接沟通的途径。
You can look at invokedynamic as a way for JVM users to communicate directly with the optimizing backend of the JVM.
RFCOMM模块和用户模式dund后台进程实现了Bluetooth拨号网络。
The RFCOMM module and the user mode dund daemon implement Bluetooth dialup networking.
RFCOMM模块和用户模式dund后台进程实现了Bluetooth拨号网络。
The RFCOMM module and the user mode dund daemon implement Bluetooth dialup networking.
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