查询词典 variance

The tolerance of seawater fish Japanese sea bass and black rockf ishto pH and alkalinity is studied through the experiment of acute toxicity. The median lethal concentration values are obtained by the method of probability unit. The safe concentrations of alkalinity, C032- and HC03- are obtained. The signification of pH and alkalinity is estimated with analysis of variance.

本文应用急性毒性试验方法研究了海水鱼类鲈鱼黑鲪对pH、碱度、二氧化碳体系各分量的耐受性，应用概率单位法求得半致死浓度，并得到了碱度、碳酸根、碳酸氢根等的安全浓度，应用方差分析评价了pH和碱度致毒作用的显著性，探讨了不同pH、碱度范围的主要致死因子。

Women's greater proclivity for child care may well have a biological basis, as may the difference in variance that I mentioned.

女生带小孩的倾向更大一些，这可能具有生物学的理由，这也是我前面提及的方差有别的原因。

It is indicated by the performance analysis that the approach here has comparative bias and variance as the approach of discrete prolate spheroidal sequence multitaper spectral analysis.

性能分析的结果表明，此方法与离散长球序列多窗口谱分析方法具有相当的估计偏差与方差性能。

Ten QTLs for proline content were detected on chromosomes 1, 2, 3, 4, 7, 8, 9 and 11, which could explain 41. 16% of phenotypic variance.

对脯氨酸的分析中，共检测到10个QTL，分别位于第1、2、3、4、7、8、9及第11染色体上，对表型变异的总贡献率为41.16％。

By way of giving reliability function a proper variation, the distribution class whose elements possess the same mean and variance is depicted for the first time.

九。首次通过可靠度函数的适当变分，给出了具有相同均值和相同方差的寿命分布类的一种刻画。

By comparison with theoretical K value to figure out variance and to find out the main soil character parameter. Using MATLAB software, theory of parameter modification is employed to modify parameters in Normal Equation. Eventually, the proper calculating model of K factor the same with the typical slope soil of highway in Hubei Province, is established.

比较理论土壤可蚀性因子K值及实测土壤可蚀性因子K值之间的差异，找出导致该差异的主要土壤性质参数，在此基础上运用MATLAB数学分析软件对诺模方程进行修正，以得到适用于湖北省孝襄高速公路边坡代表性土壤的土壤可蚀性因子K值的计算模型。

The variance risk measure indicates the threshold of risk measure, and it's adopted proverbially because its familiarity and facility in mathematical manipulation.

方差方法被人们所熟知，且计算简便，因而得到了广泛的应用。

MethodsThe K562 cells were treated with PSO extracted from Chinese medicine psoralea fruits in different concentrations plus UVA (360 nm) in different irradiation time or not. Apoptosis ratios, ultrastructure changes and expression of Caspase8 and Caspase3 proteins were detected. The factorial design and analysis of variance were used to analyze the interaction among the factors.

方法用不同浓度的中药补骨脂中提取的PSO和不同照射时间、波长为360nm的UVA作用于K562细胞，检测细胞凋亡率、在电镜下细胞超微结构改变及Caspase8、3蛋白的表达，用多因素方差分析法对定量资料进行统计分析。

The results showed that length from flag leaf pulvinus to spike base has the largest coefficient of variance of 42.1% and 37.2% in both DS and WW environments, respectively, while the spikelet per spike has the smallest CV of 6.4% and 5.7%. Under different water regimes, spike number per plant, effective spikelet per spike and peduncle length contribute a lot to the stable grain yield. Genetic diversity indices of DTI were from 1.95 to 2.07, with an average value of 2.02. Based on the DTI of agronomic traits, all accessions could be clustered into seven groups, the first and third groups are not sensitive to the water regimes, and the second group is more suitable for planting in dryland.

结果表明：在雨养和灌溉条件下，穗叶距的变异系数最高，分别为42.1%和37.2%，单穗总小穗数的变异系数最低，为6.4%和5.7%；不同水分条件下，植株稳产性主要受单株穗数、有效小穗数及穗下节长的影响；性状耐旱指数的多样性指数在1.95到2.07之间变化，平均值为2.02；根据性状耐旱指数将供试材料分为7个类群，其中第I、第III类群材料表现为对水分条件不敏感，而第II类群材料更适于在干旱条件下种植。

With Puna Chicory as raw material, the research was made on the conversion rate of inulin fructose influenced by hydrolysis time, hydrolysis temperature and the concn. of sulfuric acid through the test of single factor, and the optimal technology parameters for inulin hydrolysis were determined by orthogonal experiment integrating with variance analysis and their results were verified.

方法］以普那菊苣为材料，单因素试验研究水解时间、水解温度、硫酸浓度对菊粉果糖转化率的影响，正交试验结合方差分析确定菊粉水解的最优工艺参数，并进行验证。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。