查询词典 on line

Now keyword search over relational database is becoming a hot research topic in both database and IR area. There are two kinds of popular keyword search systems, while neither of them can give accurate results with high speed. The on-line system can obtain the latest search results while the search speed is low; The off-line system speeds the query processing by means of preprocessing, but the disadvantage lies in expensive cost needed to preprocess again once the database is updated.

关系数据库上的关键词检索已成为数据库和信息检索领域的研究热点之一现有数据库关键词检索系统可分为在线和离线两大类，它们都难以兼顾查询效率和效果：在线系统能够获得数据库最新结果，但速度较慢；离线系统使用预处理提高查询速度，但若数据库更新就要重新执行预处理。

BACKGROUND In current practice, process control is implemented in two stages: off-line and on-line.

在目前的实践中，过程控制，是实施分两个阶段：脱机和联机。

Solid-phase extraction technique has become increasingly popular in recent years because it is experienced with several major advantages: the fast, simple and direct sample application in very small size without any sample loss; higher preconcentration factor; rapid phase separation; the ability of combination with different detection techniques in the form of on-line or off-line mode; time and cost saving.

而固相萃取与原子光谱检测技术联用在痕量元素的分离富集和形态分析中也发挥着日益重要的作用。

Files can be supplied in nearly any output format for on-line publishing or off-line printing purposes.

文件可通过各种方式输出，以满足在线出版或线下印刷的需要。

Before this, there is no on-line testing products for twist. This is the first time to finish the twist automatic testing inland, the main guide line has finished, technological broken has happened.

在此之前，国内尚无缠度的在线检测产品，这是首次完成了国内缠度自动检测，达到了要求的主要技术指标，有技术性突破。

Some aggregation methods either work off-line or are unable to confirm parameters while working on-line, let alone effective real-time alert.

一些聚合方法要么离线作用，要么在线却难以确定诸多参数更不能实现有效的实时预警。

The systemic design including hardware design and software design,is introduced in this paper.Analyse the reconfigurable capability and give a concretely circuit and appearance design. We design the test program of instrument and two working model about on-line working and off-line working.It is expedient to operate by friendly user-machine interface.

本文详细的介绍了该仪器的整体设计，分析了其重构性能，给出了该仪器的具体电路设计及外观设计，系统的设计了该仪器工作的测试程序，并且设计了联机和脱机两种工作方式，均具有友好的人机界面，方便用户的操作。

Off-line marketing is opposable to On-line marketing.

离线营销相对在线营销而言。

After analysing the off-line negociation and on-line agreement supported by parlay specification,it gives out the drawbacks.

对组成服务水平协议的离线协议与在线协议的分析可知Parlay规范对服务水平协议的支持存在着极大的不足。

The piecewise-linear feedback control law is off-line computed by LMI optimization problems and the on-line control computation reduces to the simple evaluation of the defined piecewise linear function, which makes the online computational efficiency significantly improved.

针对预测控制滚动优化命题的在线计算任务大，作者提出了一种基于分段反馈的离线预测控制算法，通过离线求解线性矩阵不等式优化命题构造分段反馈控制律，在线运行时只需实施满足条件的反馈控制律，极大地提高了控制器在线计算效率。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。