到差

And the data rate is adapted to maximize the spectral efficiency subject to average bit error rate constraints.

推导出基于预测的信噪比和预测误差方差的数据速率的最优解，以此对数据速率进行调整，使得频谱效率在误比特率的约束条件下达到最大化。

This paper applies to analytical chemistry experiment teaching two kinds of quality control charts, the average value control chart and the extreme di -fference control chart widely nsed in baily experiment work.

本文将两种在日常分析工作中早已被广泛应用的质量控制图，即平均值控制图和极差控制图应用到分析化学实验教学中。

However, by 1987, the Siad Barre government was faced with serious unrest at home, caused by the poor condition of the economy and growing repression.

然而，到1987年，西亚德巴雷政府面临着严重的动乱在家里，所造成的条件很差，经济和日益增加的镇压。

Next, kernel PCA is used to construct a set of orthogonal coordinate base in feature space.

其次，在特征空间中，利用协方差矩阵的非零特征向量构造了一组正交基，并将变换后的光谱向量投影到特征空间中的正交基上。

It is also baseless to say that those with a weak foundation in Chinese are usually unable to excel in English.

也不是华语基础差的，其英语往往也好不到哪儿去。

In winter you tell people "it's not nearly as cold as Bastogne."

到了冬天，你会跟朋友说这冷劲儿比bastogne差远了

By any name they were a bad team, and remained horrid for the first four seasons in the Beehive State before two fortuitous draft choices changed the team's history forever.

不管叫什么名字，他们在那个时候是一支很差的球队，在他们非常幸运选到了两名能够永远地改变他们球队历史的球员之前这支球队在盐湖城的前四个赛季中仍然是一支超级烂队。

In this paper we generalize Bernstein inequality of t he sequence of independent random variables to the martingale difference s, then we give an application of this inequality.

本文将独立随机变量序列的Bernstein型不等式推广到鞅差序列情形，给出该不等式的一个应用，并在一定条件下证明了非参数回归中函数估计的强相合性。

Helfrich firstly proposed the spontaneous curvature model based on the similarities of the lipid membrane and the nematic phase liquid crystal,thus proved the existence of the biconcave shape.

Helfrich根据向列相液晶与类脂膜的相似性，于1973年最先提出了膜的自发曲率弹性理论，并由此证明了膜的双凹盘形的存在；同时，考虑到膜泡双层间的面积差对膜泡能量的影响，1989年S。

Examples are industrial discharge such as brine, living sewage disposal, cooling water of power plant which is discharged to the river, dust or waste hot gas which is let to the atmosphere from chimney and cooling tower, and bilge water which is released to the port water area.

当废水或废气排放到环境流体中时，废流体的密度往往与环境流体的密度不同，这种由于密度差而产生的浮力不仅影响平均流本身，而且更主要的影响湍流及受湍流影响的动量、热量和质量的交换。

This brought fixed cost, but it also is meant at the same time use a source to won't make you singlehanded assume a problem.

这带来了一定的成本，但它同时也意味着使用开源不会让你独力承担问题。

He gained a small fortune in real estate.

他在房地产上发了一笔小财。