variance

英 [ˈveəriəns]

美 [ˈveriəns]

n.  变化幅度; 差额

复数：variances　

TOEFLGRE化学

Collins.1 / BNC.7319 / COCA.5027

习惯用语

n.

at variance (with sb/sth)
• 看法不一；矛盾；冲突
  disagreeing with or opposing sb/sth
• These conclusions are totally at variance with the evidence.
  这些结论与证据完全相悖。

牛津词典

noun

• 变化幅度；差额
  the amount by which sth changes or is different from sth else
  1. variance in temperature
     温差
  2. a note with subtle variances of pitch
     音高有细微变化的音符

柯林斯词典

• PHRASE （与…）不一致，相矛盾
  If one thing isat variance withanother, the two things seem to contradict each other.
  1. Many of his statements were at variance with the facts...
     他的说法有很多和事实不符。
  2. This idealistic concept is at variance with reality.
     这种理想主义的观念和现实相矛盾。
• N-VAR 差异;不同
  Thevariancebetween things is the difference between them.
  1. ...the variances in the stock price.
     股票价格的变化
  2. ...total revenue variance.
     总收入的差异

英英释义

noun

• an activity that varies from a norm or standard
  1. any variation in his routine was immediately reported
  Synonym:variation
• an official dispensation to act contrary to a rule or regulation (typically a building regulation)
  1. a zoning variance
• the quality of being subject to variation
  Synonym:variabilityvariableness
• a difference between conflicting facts or claims or opinions
  1. a growing divergence of opinion
  Synonym:discrepancydisagreementdivergence
• the second moment around the mean
• discord that splits a group
  Synonym:division
• an event that departs from expectations
  Synonym:discrepancyvariant

双语例句

• Methods: Under the same conditions, the method of life table and analysis of variance was used.
  方法：在相同条件下，采用生命表的方法和方差分析。
• It is called variance ratio and the exact relation between variance ratio and correlation coefficient is also built.
  并找到了方差比与相关系数之间的内在联系。
• Check, calculate and update item cost of inventory, responsible also for inventory valuation and variance analysis.
  负责库存成本的审核、计算和更新，执行库存的估价和差异分析。
• A theoretical distribution with finite mean and variance.
  平均数和方差数都为有限的一个理论分布。
• In this paper, minimum variance filtering and smoothing algorithms of a class of non-causal systems are discussed.
  研究一类非因果系统的最小方差滤波与平滑。
• Improvement of interval estimation for generalized variance in multivariate normal distribution;
  本文对两正态混合分布参数估计问题进行了研究。
• This components of parameter variance depends on the sample size.
  参数方差的这一组成部分依赖于样本容量。
• The principle of variance reduction of model parameters estimation through OA-MLHS together with BCT is also discussed.
  文中对结合使用OA-MLHS与BCT从而减少了分布参数的估计方差的数学原理进行了分析。
• The performance of the two controllers of distillation column is evaluated by minimum variance as a benchmark.
  用最小方差准则对两个精馏塔控制系统的性能进行了分析。
• The variance optimality of combining ridge and principal components estimate is discussed in the class of reduced-dimension estimates.
  讨论了岭型主成分估计在一类降维估计中的方差性质，证明了在一定条件下岭型主成分估计的方差和最小。