查询词典 useful time

This works provide necessary theoretical direction and useful database to the Atomic Vapor Laser Isotope Separation , which is vigorous in the interaction between laser field and atomic media. Additionally, the technology of controlling electromagnetic pulse can be utilized for optical communication, real time monitor, manipulation of chemical reactions, and phase-sensitive imaging.

论文的工作有助于对光与物质相互作用的物理过程的深入理解，为原子法激光同位素分离工程提供必要的理论指导；同时，脉冲控制技术具有广泛的应用前景，可用于光通讯、实时监控、化学反应的操纵以及生物的相位成像等多方面。

Some useful notations and definitions are give in this chapter.In Chapter 2,a class of discrete-time model of two-cell cellular neural networks with symmetric temptate are investigated. We obtain some results about the stability,asymptotic stability,the existence and attractability of 2-periodic solutions.

第三章讨论了反馈矩阵为非对称矩阵的二元离散细胞神经网络模型的稳定性与渐近稳定性、周期解的存在吸引性，除了得到系统稳定和存在2-周期解的相关结果外，还得到了系统在原点出现类似于Hopf分支的局部分支以及多个吸引4k-周期解的共同存在性。

At the time, Flash was a newborn as an application programming tool and dvd authoring software was too heavy and rigid to be useful.

那时候，flash作为应用编程的一个新的开发工具，而dvd 授权软件则显得太笨重。

Autoregressive Process, a useful tool in time-series models, is used in this thesis to demonstrate features of price fluctuation in international oil markets and to find out what causes such fluctuation.

本文使用分析时间序列问题常用的方法——自回归AR模型，来研究世界油价波动的特征，分析引起油价波动的原因，从而掌握世界油价波动的规律，更好地采取措施降低油价波动对经济的影响。

Firstly the basic principle of OFDM and its anti-multi-path-fading are briefly introduced in this paper. Then basing on this point, we researched the basic principle, the coding designing and the algorithm of the signal detection of these MIMO-OFDM systems. At the same time, the performances of STBC-OFDM and SFBC-OFDM were analyzed and simulated under short wave circumstance, and got some useful conclusions, they have certain reference value for more research of short wave communication in future.

本文首先介绍了OFDM系统的基本原理以及它对抗多径的基本原理，然后在此基础上，对其所形成的几种MIMO-OFDM系统的基本工作原理，码字设计以及相应的信号检测算法进行了研究，详细分析研究了STBC-OFDM和SFBC-OFDM系统的性能并在短波信道下对其性能进行了仿真和对比分析，得出了有用的结论，这对以后短波通信的深入研究具有参考价值。

It may make the place a useful bolthole in some 5 billion years' time.

这样不仅生命有足够时间在这颗新发现的行星上演化，人类还可以在大约50亿年后将这颗行星当做避难所。

We should no longer wait our time learning bookish knowledge, we must learn something really useful.

我们不能再把时间浪费在学那些无用的书本知识了，应该学真正有用的东西。

However, there will come a time when you forget to bookmark a useful website.

然而，总有一天时候你忘了书签一个有用的网站。

CAE technology is a very useful tool, with which much time and much cost can be saved.

计算机辅助工程技术是很有用的工具，用它可以节省很多时间和成本。

I hope this is useful and saves some time from the calculator.

我希望这是有益的，可以节省一些时间的计算器。

For those who choose to go with Scryer, the main perks of aligning your character with them is the added critical strike rating once you gain enough reputation with them.

如果说王小波的作品是茶，那么对不起，只能说他心中都是茶，不是王小波改行当了采茶女。

The secret is not to "think" about the thoughts but to allow them to flow through your mind,while keeping your mind free of afterthoughts.

其中的诀窍就是不要去&想&念头，让它流贯心头，保持心的自由和开放。