查询词典 variance

The value of a scalar variance at a general point can be estimated from the measurement at a limitary data points,and the deviation between the estimated value and the measured value is the least.

使用该阵列有限个点上的观测值可以客观地分析出该变量的瞬间空间分布，使它与其真值之间的偏差达到最小值。

The equations of heterosis areV(subscript F1)=(l/2)Na^2+(l/4)Nd^2+Vsubscript I(F1additive dominance F1 epistasisV=(1/2)Na^2+(l/2)V1,additive parental epistasisV=(1/4)Nd^2+Vsubscript I(F1+(1/2)Vl,dominance F1 epistasis parental epistasis.where N is number of genes controlling a trait,α=P(subscript i-P/2, d is deviation from midparent, while the variance components are all indicated by their names under the repective terms.

由一个二项分布随机变数及其推广至多项分布推导出杂种优势的公式：V(下标 F1)=Na^2/2+Nd^2/4+V下标(F1加性显性 F1上位V＝Na^2/2+V/2加性亲代上位V＝Nd^2/4+V下标(F1+V/2显性 F1上位亲代上位在此N=控制性状的基因数，α=p(下标 i-P/2， d=离中亲的偏差，而各方差则如方程底部所列。

Besides, it is consistent with the asymmetrical gene flow from monogynous to polygynous populations through males in monogyne..Therefore, the cuticular chemicals can not be cluster well between monogynous and polygynous ants, and the variance of chemicals of the latter is higher than those of the former.

由於这些化学物质的合成受到遗传影响，这种现象显示两个涵义，第一个是单蚁后社会型的工蚁对其他蚁后有强烈的排他性而造成的选汰压力导致其遗传结构上较为均质，另一个涵义显示单蚁后社会型的遗传组成可藉由雄蚁将其基因带入多蚁后社会型的遗传组成，但反之则不然；因此二者之间无法分群，且后者的遗传变异较前者为大。

The striking result is that the weighted variance does not increase monotonically over time.

醒目的结果是，被衡量的变化单调地不增加随时间。

By the odd variance analysis to the average of AEMG, MPF and slope of MPF in the preliminary 20 seconds, we find that the falling slopes of MPF of the left multifidus muscle and the right multifidus muscle are remarkably influenced by driving time, not so other muscles.

通过对前20秒的AEMG、MPF的均数以及MPF的斜率进行单因素方差分析，左、右侧多裂肌前20秒sEMG信号特征指标MPF的下降斜率受驾驶时间影响显著，而其它肌肉的影响不明显。

Peter's; the Muratorian Canon, which alone is at variance with this common tradition, is obscure and bears evident marks of textual corruption, and the subsequent restoration suggested by Zahn, which seems much more probable, is clearly favourable to the authenticity.

所有的收藏品或名单新约全书提到它作为圣彼得的穆拉多利佳能，这本身是不符合这一共同的传统，是晦涩和负有明显标志文字腐败，以及随后恢复建议赞恩，这似乎更可能的，显然是有利的真实性。

Peter's; the Muratorian Canon, which alone is at variance with this common tradition, is obscure and bears evident marks of textual corruption, and the subsequent restoration suggested by Zahn, which seems much more probable, is clearly favourable to the authenticity.

所有的集合或名单，新约圣经提及它作为圣彼得的；穆拉多利残卷佳能，其中单是在差异与这个共同的传统，是含糊和负有明显马克考腐败，以及随后恢复的建议，赞恩，这似乎更为可能，显然是有利的真实性。

First, this paper gives an introduction of some methods of unequal probability sampling, their estimators and variance estimators, including sampling with pps with replacement, methods of sampling without replacement suggested by Brewer, Durbin, Sampford , Des Raj , Murthy , Rao-Hartley-Cochran. Then, at the basis of Rao and Bayless's study , we consider that population can be splited two random subpopulations, which are respectively drawn from different infinite super-populations, and compare the stabilities of estimators of the methods that given above.

本文首先从理论上介绍了若干种不等概率抽样方法，它们的估计量、估计量的方差及其估计，其中包括有放回PPZ及PPS抽样，不放回不等概率抽样中的Brewer、Durbin、Sampford、Des Raj，Murthy、Rao-Hartley-Cochran等人的方法；其次，在Rao和Bayless两人就样本单元数n=2的情形对上述抽样方法进行比较的基础上，将总体随机地分成两个子总体，视每个子总体取自不同的线性超总体，在文中，我们利用计算机实现随机分组，并通过画图比较各方法估计量的稳定性，结果表明，对变异系数C.V。

First, this paper gives an introduction of some methods of unequal probability sampling, their estimators and variance estimators, including sampling with pps with replacement, methods of sampling without replacement suggested by Brewer, Durbin, Sampford , Des Raj , Murthy , Rao-Hartley-Cochran.Then, at the basis of Rao and Baylesss study , we consider that population can be splited two random subpopulations, which are respectively drawn from different infinite super-populations, and compare the stabilities of estimators of the methods that given above.

本文首先从理论上介绍了若干种不等概率抽样方法，它们的估计量、估计量的方差及其估计，其中包括有放回PPZ及PPS抽样，不放回不等概率抽样中的Brewer、Durbin、Sampford、Des Raj，Murthy、Rao-Hartley-Cochran等人的方法；其次，在Rao和Bayless两人就样本单元数n=2的情形对上述抽样方法进行比较的基础上，将总体随机地分成两个子总体，视每个子总体取自不同的线性超总体，在文中，我们利用计算机实现随机分组，并通过画图比较各方法估计量的稳定性，结果表明，对变异系数C.V。

Logistic regression analysis and multiple factor variance analysis showed clearing degree and H2O2 concentration promoted HPV6.11/16.18 infection and speeded infection process. But pyocyte, mycetes, neuraminidase had no dependability with HPV6.11/16.18 infection.

Logistic回归和多因素方差分析结果表明，清洁度和H2O2浓度与HPV6.11/16.18感染和加速感染进程密切相关，与脓细胞、霉菌、唾液酸苷酶并无相关性。pH值、白细胞、霉菌、滴虫、线索细胞、白细胞酯酶与HPV6.11/16.18感染虽无相关性，但在引起HPV6.11/16.18感染方面起到重要作用。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。