查询词典 first approximation

Periodical interference can be represented in a good approximation with a discrete Fourier series.

这类干扰信号的频率若落在有用信号的频谱范围之内，用频域处理方法则很难将其单独消除。

Among these methods, it is surprising that few if any fundamental treatments of decoherence exist that include the dynamics of disentanglement with better than the Markovian approximation or phenomenological tradition.

所以研究环境对量子系统的影响，以便减缓环境对其包围下的量子系统的耗散、退相干、退纠缠等负面作用，就成为当今非常重要的课题。

Using the adiabatic approximation, the expression of the mean dissipative force are acquired.

利用绝热近似，给出了平均辐射压力的表达式。

Utilizing the linear approximation lemma, we construct one distinguisher to distinguish the weak Key-IVs for each Grain version.

虽然弱Key-Ⅳ出现的概率很低，但可以说明这两个算法的密钥初始化过程存在安全问题，有必要进行修改。

The disyllabic pitch model is obtained with the help of cubic polynomial approximation and neural network technique.

双音节音高模型是韵律调节的基础；将Kohonen自组织神经网络技术应用到音高模型的分类，并取得了较好的分类效果；（4）基于正弦模型表示的汉语语音分析与合成：将正弦模型引入到汉语的语音分析合成中来，提出了汉语的基于正弦模型表达的分析合成算法，并对在汉语普通话语音合成中的应用，包括汉语四声的变调、时长音高的调整等进行了深入的研究；对于合成音节之间的拼接问题作了探讨，并提出了自己的观点；在国内外的文献中，还没有对于该方法用于汉语语音的分析合成的应用的报道，因此是本文的主要贡献之一。

Although finding the Minimum Connected Dominating Set in an arbitrary graph is a NP-hard problem, many approximation algorithms have been proposed to construct a serviceable CDS.

由于求解最小连通支配集是一个NP难问题，许多近似算法被提出用于构建可用的最小连通支配集。

Although finding the Minimum Connected Dominating Set in an arbitrary graph is a NP-bard problem, many approximation algorithms have been proposed to construct a serviceable CDS.

由于求解最小连通支配集是一个NP难问题，许多近似算法被提出用于构建可用的最小连通支配集。

Mean activity coefficients of 12 electrolytes in their aqueoue solutions have been calculated over a wide range of concentration by use of the mean sphere approximation considering the hard-sphere contribution in the calculation proce- dure.

本文应用 MSA 方法，对0～2m 浓度范围内的12种电解质在水溶液中的平均活度系数进行了理论计算，计算结果与文献值吻合得很好。

The effective mass approximation model can very well describe the behaviors of the excitons confined in the dots.

有效质量近似模型可以很好地描述激子的基态能量的量子尺寸效应。

His hair fell over his eyes in an exact approximation of carelessness and his skin glowed with an egg-shell white perfection that Harry always envied as a teenager, even when he was trying to sock him in the nose.

他深蓝色的袍子完美的裹着他修长的身体，那厚实的布料象是天鹅绒，很吸光，还一同吸引了所有的目光。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。