variance 基本解释
名词 变化，变动; 不一致; 分歧; <数>方差
variance 相关词组
variance 相关例句
名词
1. We have never been at variance with our neighbors.
我们从未和邻居发生过龃龉。
variance 网络解释
1. 911查询·英语单词
1. 方差：16 方差(variance)是一组数据中各变量与其均值离差平方的平均数,方差的算术平方根叫标准差(standard deviation). 方差与标准差是反映数值型数据离散程度的主要的也是常用的方法,是描述数据分布特征的重要的统计量.
2. 变异数：心率变异性分析则是通过测量连续正常的QRS波群周期之间的变化(beat to fluctuation)变异数(Variance),从而反应心率的变化. 它不同于常用的以时间为单位的平均心率变化指标(如最大心率或最小心率等),HRV的大小并不反映心率的快慢.
3. 差异：除此之外,Breiman [Bre96a] 还从偏向(bias)和差异(variance)的角度对泛化误差进行了分析. 他指出,不稳定预测函数的偏向较小、差异较大,Bagging正是通过减小差异来减小泛化误差的. 在此之后,
variance 双语例句
1. Our main contribution of the thesis is in Chapter three, and a new kind of method to estimate the observational error variance, usually assumed a constant whose value can be evaluated, was brought up for Univariate Bayesian Normal Dynamic Linear Model, the most important and common one in practice.
在论文引言中，我们首先较为简要介绍了Box─Jenkins传统时间序列分析方法和它的研究现状，然后对贝叶斯动态线性模型及其预测进行了概述。
2. variance的反义词
2. The paper explains the variance of sample means and that of sample proportion with the unrepeatable sampling in finite population are more complicated than with the repeatable sampling and with the unrepeatable sampling in infinite population.
说明有限总体不重复抽样方式相比于重复抽样方式和无限总体不重复抽样方式，样本均值方差和样本成数方差较复杂，需根据总体单元总数进行修正，增加一个有限总体修正系数的因子。
3. variance的反义词
3. Results of endurance on temperature indicated that both wild and domestic pigs have different reaction of none adaptation below-13℃ or above 27℃, but wild pig has stronger endurance to high and low temperature than Bamei. It shows that the range of temperature from -13℃ to 27℃ is relatively fitting the growth and activities of wild pigs. 8 Analyzing synthetically the effects of light intensity on activity frequency and intake of wild pig, Bamei and Landrace, the range of light intensity adapted to wild pig is smaller than the domestic, but the variance of light intensity has more effects on wild pig within a fitting range of light intensity.
8综合分析光照强度对野猪、八眉猪和长白猪活动频度及采食量的影响，野猪适宜的光强度范围比家猪小，但在适宜的光强度范围内，光强度变化对野猪所起的正效应较大，说明野猪对光照强度的灵敏度比家猪高，在201x～901x的光照强度区间内相对喜欢光线较弱的环境，因此，在对野猪驯养时要尽可能满足野猪的这一习性，将光强度控制在501x以内。
4. This research uses surfing as the main topic of research. By adopting the purpose sampling method, there were 325 effective questionnaires collected. All the materials were analyzed by descriptive statistics analysis, t-test, one-way variance analysis, factor analysis, and regression analysis to establish the relationship between flow experience and activity attachment.
本研究以冲浪为例，采立意抽样方式进行，回收有效问卷共计235份，根据所得资料，以描述性统计、t 检定、单因子变异数分析以及回归分析来建立心流经验与活动依恋两者间关系。
5. The activity of Urase and Sucrase in different degradation stages showed significant variance (P.05 the activity of Urase in different soil layers were significant P.
草甸退化使土壤脲酶和蔗糖酶活性出现了显著变化(P.05)，脲酶活性在不同土层间差异显著(P.05)，蔗糖酶没有表现出土体层次性差异；相关分析表明，高寒草甸的土壤酶活性与营养成分含量之间相关不显著。
6. This paper introduces a few main Stochastic orderings, including expected utility criterion, stochastic dominance, likelihood ratio, hazard rate and mean-variance rule, and finally discusses the relations among these stochastic orderings.
文章先介绍了几种主要的随机序，其中包括期望效用准则、随机占优、单调风险率条件、单调似然率条件和均值-方差准则，然后在此基础上研究了它们之间的关系。
7. In chapter 4, we first consider asymptotic normality of the variance M-estimators.
在第三章首次考虑解释变量为非随机设计矩阵〓这一比较常见情形的M-估计递推算法。
8. The variance of the isomershift of Fe atom with the neighboring number of Cr atoms was ascribableto the charge transfer between Fe and Cr atoms.
同质异能移随近邻Cr原子数的变化可由Fe-Cr原子之间的电荷转移得到定性解释。
9. There are plenty of statistical and numerical processing packages out there but what I want is a simple and lightweight implementation for the basic stats: variance, standard deviation, range, median, and mode.
有大量的统计和数值处理包在那里，但我需要的是一个基本的统计信息简单，重量轻的执行情况：方差，标准差，范围，中位数，和模式。
10. The controllable variance is the difference between the overhead budgeted at the operating level achieved and overhead actually incurred.
控制差异是指实际制造费用与标准产量的预算制造费用的差额。小尺度运动的能量是不均匀的。
11. The volume variance is the difference between the amount of overhead budgeted at the actual operating level achieved during the period and the standard amount of overhead charged to production during the period.
产量差异是在预算条件下某实际产量的制造费用与分配的标准制造费用的差额。
12. variance的反义词
12. For the purpose of realizing the CIMM, the sensitivity to the dynamic variance must be reduced as possible.
为使合成阻抗匹配法能够实用，需要使匹配网络对动态变量的敏感度降至最低。
13. Time delay and Doppler frequency estimation is studied. A calculation of estimation variance at any received carrier to noise ratio is derived.
全球定位系统是近年来在全球范围内得到广泛应用的高精度导航、定位和定时系统，它的产生和发展已成为现代化导航定位的重要标志。
14. variance
14. Contrary to tea's material cultural heritage, its non-material culture heritage is generally neglected by the mass. However, tea's non-material heritage fully represents the wisdom and civilization of the Chinese people and it contains high historical, aesthetic, social and economic value. Additionally, because it is characterized by its oral spread, collectivity, inheritance, variance and adherence to environment, it cannot be protected forcefully.
相对于茶物质文化遗产而言，茶非物质文化遗产是茶文化遗产的重要组成部分，是中华民族智慧与文明的结晶，具有较高的历史价值、审美价值、社会价值和经济开发价值，并且由于茶非物质文化遗产具有口头性、集体性、传承性、变异性、环境依附性等特征，决定其无法被强制性保护。
15. Analysis of variance was used to evaluate the measurement data, and X^2 test for enumeration data.
计量和计数资料的差异比较分别采用方差分析和x^2检验。
16. 好好学单词·英语单词
16. An improved algorithm is proposed here which include:(1) GLR variance based threshold adaptive algorithm is to improve the threshold selection approach in speaker based speech segmentation under various acoustic environments; (2) BICs Detection Ability is referred to determine when BIC is effective; (3) Besides to verify the candidate segmentation points, BIC is used to calibrate their bias caused by GLR variance.
提出一种改进的基于说话者的语音分割算法，对GLR和BIC相结合的算法作进一步的改进：(1)基于GLR距离方差的自适应阈值调整算法改进了不同声学特征下基于距离的语音分割算法中的阈值选取方法；(2)引入BIC可测度概念来度量其适用范围；(3) BIC信息准则校准非冗余的候选分割点的偏差。
17. Objective:To introduce a robust method for homogeneity of variance.
目的 ：介绍一种较为稳健的方差齐性检验方法。
18. Twenty three quadric polynomial regression equations are set up for the relationship between hot pressing parameters (temperature, pressure, time and mat MC) and panel properties (density, MOR, IB, MOE, thickness swelling, edge screw holding and face holding). Seventeen equations are notable by variance analysis. It shows that the experiment data conform to the mathematical model.
建立了刨花板、大片刨花板五项性能指标（密度、静曲强度、吸水厚度膨胀率、垂直板面握螺钉力、平行板面握螺钉力）与热压工艺参数（温度、压力、时间、板坯含水平）二次多项式回归方程，在23个回归方程中，方差分析有17个方程具有显著性，说明试验数据与所采用的二次多项式回归的数学模型是基本符合的。
19. /u0064/u0061/u006E/u0063/u0069/u002E/u0039/u0031/u0031/u0063/u0068/u0061/u002E/u0063/u006F/u006D
19. Namely this dissertation is to probe into the variance and effcetiveness of the land laws system from the late stage of Qing dynasty to the Republic of China and to find intrinstic relation among the social fators which infect the variety of the land laws, focusing on the variance of the land rights'system, by adopting astudy method of law-sociology assisted with historical analysis, comparative analysis and criterion analysis.
本文即在于以法律社会学方法为主，兼用系统的方法、历史分析法、比较分析法及规范分析法，以地权制度变迁为中心来探讨中国近代从清末到民国南京政府时期土地法制的变化和作用，并寻找影响土地法制变化社会各因素之间的内在关系。
20. Through theoretical analysis I get the result of original bridge main beam load lateral distribution variance rule and main beam rigidity and spacing factor lead to load lateral distribution change.
本部分通过理论分析得出拓宽后原有桥梁主梁荷载横向分布的变化规律及主梁刚度和间距等因素对荷载横向分布的影响，以分析拓宽后桥梁主梁的受力变化。
variance 词典解释
1. （与…）不一致，相矛盾
If one thing is at variance with another, the two things seem to contradict each other.
e.g. Many of his statements were at variance with the facts...
他的说法有很多和事实不符。
e.g. This idealistic concept is at variance with reality.
这种理想主义的观念和现实相矛盾。
2. 差异;不同
The variance between things is the difference between them.
e.g. ...the variances in the stock price.
股票价格的变化
e.g. ...total revenue variance.
总收入的差异
variance 单语例句
1. Experts also cited the difference in the consumption culture between China and foreign countries as one of the main reasons behind the price variance.
2. Not only the educational system, also the family structure of both countries contribute to the variance in imagination.
3. Much of the credit must go to the large variance in performance of Pirelli's new tyres as they wear out.
4. Another factor behind the variance was the admission of new immigrants, who were also highly concentrated in certain districts.
5. Indian food, like its China counterpart has a deep and rich variance in styles and tastes.
6. My views are far from unique, but they are at variance with the prevailing mood.
7. The effective date announced at the press conference yesterday was at variance with what Guangdong Governor Huang Huahua said earlier.
variance 英英释义
noun
1. an activity that varies from a norm or standard
e.g. any variation in his routine was immediately reported
Synonym: variation
2. an official dispensation to act contrary to a rule or regulation (typically a building regulation)
e.g. a zoning variance
3. the quality of being subject to variation
Synonym: variability variableness
4. a difference between conflicting facts or claims or opinions
e.g. a growing divergence of opinion
Synonym: discrepancy disagreement divergence
5. the second moment around the mean
the expected value of the square of the deviations of a random variable from its mean value
6. discord that splits a group
Synonym: division
7. an event that departs from expectations
Synonym: discrepancy variant
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