1) covariant differentiation
共变微分
2) covariant differential
共变微分
3) covariant differentiation
共变微分法
4) covariation
共变
1.
To solve the problem that the-spectrum estimation performance based on covariation under the-stable noise environmentbecomes obviously worse when the distribution parameter is small,a method of fractional low-order covariance(FLOC) spectrum estimation was proposed.
针对在分布参数值较小时稳定分布噪声下基于共变的谱估计性能较差这一问题,提出了一种分数低阶协方差(FLOC)谱估计方法。
2.
After introducing the fractional lower order statistics,including the covariation and the fractional order correlation(FOC),a new method of 2-D direction finding based on the fractional order correlation for underwater 2-D source localization using a vector hydrophones array under al.
利用稳定分布对实际中所遇到的具有较大脉冲特性的随机噪声进行建模,分析了共变在阵列信号处理中的不足,利用已有的矢量水听器模型建立一种水下目标定向系统,提出了一种基于分数阶相关的水下目标定向算法。
5) covariance
共变
1.
This paper, based on the theory of Covariance, endeavors to analyze the covariance of language and society through comparing the old vocabularies, new vocabularies and loan vocabularies from the perspective of the historical development in Chinese vocabularies.
以美国社会语言学家布赖特提出的"语言和社会结构共变"理论(Covariance)为依据,从语言中最敏感的词汇(旧词、新词、外来词)的角度出发,可以看出语言和社会存在着一定的"共变"关系。
2.
The paper studies five main characteristics of Internet English vocabulary and thus proves the principle that the formation and development of Internet English words is the result of the covariance of language and society.
该文探讨了网络英语词汇形成的系列化、缩略法、修辞手段、旧词新义、词汇变体等特点 ,从而揭示了网络英语词汇的产生、发展是语言与社会“共变”关系的产物这一规
6) co-variation
共变
1.
This paper discusses the relations of "co-variation" between society and language from sociolinguistics.
笔者从社会语言学角度探讨了社会与语言之间的“共变”关系。
2.
This article points out that the relationship between education and society is co-variation.
在分析两种偏颇论点的基础上,指出教育与社会是一种共变的关系。
7) Covariant
共变
8) covariation matrix
共变矩阵
1.
In the presence of impulsive noise,the two received signals are combinated,so the estimated impulse response of the channel is the eigenvector of its covariation matrix corresponding to the smallest eigenvalue,which can be realized adaptively using generalization o.
该算法在脉冲噪声环境下,组合两个接收信号,使其共变矩阵最小特征值对应的特征向量为信道的估计,并基于广义归一化最小平均p范数(广义NLM P)方法自适应得到该特征向量,从而获得时延估计。
9) public ratio of transformation
公共变比
1.
Combination usage of threephase power meter with threephase potential transformer and threephase current transformer extends the range of the power meter,and puts forward the concept of the public ratio of transformation, and solves the exactitude of the power computation when public transformation ratio of mutual inductor is inconformit
电压互感器、电流互感器和三相功率表结合使用 ,扩大了功率表的量限 ,并提出了公共变比的概念 ,解决了互感器变比不一致时三相功率的正确计
10) coefficence of co-variation
共变系数
补充资料:共变微分
共变微分
covariant differential
共变徽分tco相的ant击Ife咖柱目;目翻啊娜翻仃.‘.皿”如卜-衅朋.即] 微分概念在不同几何对象范围内的推广.它是流形上取值于张量场U的模的一个张量1形式DU,由下式定义 (D以幻=甲xU,这里诱U是场U沿X的共变导数(covariant deriva-tive),具体细节见共变微分法(covariant differentia-tion) .H xC为6H’ToB撰潘养廉译
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