Each request carries some data over the network; if the request does not find any updates on the server, this data transfer is a waste.
每一次请求都要在网络上传输一些数据；如果请求未在服务器上发现任何更新，那么这个数据传输就是浪费的。
On the top of that, each request carries some data over the network; if the request does not find any updates on the server, this data transfer is a waste.
除此之外，每一次请求都要在网络上传输一些数据，如果请求未在服务器上发现任何更新，那么这样的数据传输就是浪费资源。
Instead, you must initiate a transfer request to copy data into your local store.
相反，您必须发起一个传输请求将数据复制到本地存储中。
In normal HTTP communication, the client always initiates the data transfer by opening a connection to the server and sending a request.
在普通HTTP通信中，客户端始终通过打开到服务器的连接并发送请求来发起数据传输。
Data transfer and type conversions happen on both ends of the request processing cycle.
数据传输和类型转换在请求处理循环的两端发生。
The creation of the message that represents the request and response and the transfer of this data across the network create substantial overhead.
创建表示请求和响应的消息，并跨网络传输这些数据会产生巨大的开销。
There is little you can do on the server to influence this, other than somehow transfer (dummy) data while working on a request to prevent the browser from resetting a connection.
在服务器上，除了在处理请求时以某种方式传输（哑元）数据以避免浏览器重置连接之外，几乎无法影响此行为。
Latency: the time between initiating a request for data and the beginning of the actual data transfer.
延时：初始化一个对数据的请求到数据真正开始传输的时间。
The loop subroutine then loops forever, waiting for a Hypertext Transfer Protocol (HTTP) request and then answering with the data needed.
loop子例程无限循环，等待一个HypertextTransferProtocol (HTTP)请求，然后用所需数据进行回答。
The time for transporting the request to the service and the response back (which depends on the transport latency, the transfer speed and the amount of data).
将请求传送给服务并返回响应所需的时间(这个时间取决于传输延迟、传输速度以及数据量)。
Dojo makes it easy to transfer HTML form data into HTTP requests, and that is all you will need to do for these single-request actions.
通过Dojo可以很容易地将HTML表单数据转换成HTTP请求，而且这也是这些单一请求动作所需的全部操作。
AJAX USES asynchronous data transfer (HTTP requests) between the browser and the web server, allowing web pages to request small bits of information from the server instead of whole pages.
AJAX在服务器和客户端之间使用异步数据传输(HTTP请求)，允许网页从服务器上请求小量的信息而不用服务器发送整个页面。
The common operations are dynamic attachment and removal, address assignment, configuration, data transfer, power management, request processing, request error.
通用操作有设备的动态连接与移去、设置地址、信息配置、数据传送、电源管理、请求处理及出错处理等。
Abstract: According to request of data transfer in three-dimensional mapping camera, a new solution that will be more useful is investigated and developed.
摘要：根据立体测绘相机的数据传输要求，需要将多个图像数据源产生的异步图像数据传输和存储到计算机上，研究和实现了一种实用的完整解决方案。
A data collection event includes a request for data from a remote communication device, a transfer of sensor data to the remote communication device and a processing of the sensor data.
数据收集事件包括：从远程通信装置请求数据，将传感器数据传送到远程通信装置并处理传感器数据。
It USES asynchronous data transfer between the browser and the web server, allowing web pages to request small bits of information from the server instead of whole pages.
在浏览器和服务器之间，它使用异步数据进行转换，并允许网页向服务器索取少量信息而非整个网页。
It USES asynchronous data transfer between the browser and the web server, allowing web pages to request small bits of information from the server instead of whole pages.
在浏览器和服务器之间，它使用异步数据进行转换，并允许网页向服务器索取少量信息而非整个网页。
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