查询词典 average deviation

A standard expected value model for multi-objective multi-stage transmission planning is presented to realize the transmission optimal planning with the control of line overloading risks. In this model, a constraint of overloading risks is built with expected value and standard deviation of random line active power and two objectives are given as expected value of the average power loss and discount value of the investment cost. By modeling uncertain informations with probability theory, the probabilistic DC power flow is adopted for the correlated calculations among random variables in the planning model.4 A novel multi-objective transmission planning approach that considers transmission investment profit is proposed. Requests for transmission investment profit and social welfare are involved in the proposed planning approach.

以方案总投资费用贴现值和平均网损期望值为目标函数，建立多目标多阶段输电网规划的期望值模型，以线路有功潮流过负荷随机变量的期望值和标准差构建过负荷风险约束，考虑了风险发生概率和严重程度两方面的特征，通过对不确定性信息的概率建模，利用概率直流潮流进行各随机变量的相关计算，实现了控制过负荷风险条件下的输电网优化规划。4提出考虑输电投资收益的多目标输电网规划方法，综合考虑市场参与者对输电投资收益和社会总福利的要求加热管及其对输电网规划的影响。

Results: The average recovery and the relative standard deviation of sodium benzoate and caffeine obtained by PCR were 99.7%,1.06% and 99.2%,0.94 % respectively .

结果：主成分回归法测得苯甲酸钠与咖啡因的平均回收率和相对标准偏差分别为99.7%，1.06%与99.2%，0.94 %，与药典方法比较，两者所测结果差异无显著性。

The average recovery rate of the method was 95.25%, and the relative standard deviation was

该方法的平均加标回收率为95.25%，相对标准偏差为

One half of the time average over the sum of the squares of The differences between successive readings of the frequency deviation sampled over the sampling period.

取样期内，被采样的频率离差的连续两次读取差值的平方总和。

The final step is to apply the Typical Price, the Simple Moving Average of the Typical Price, the Mean Deviation and a Constant (.015) to the following formula

20天这个周期是否适用我国国情，还有待研究；2、0.15这个系数是不是需要调整一下？

In this method, blue-violet compound formed through reaction between amido and nihydrin hydrate can be detected at 570nm wavelength, and its content is proportional to the peak area. This method is easy to use, sensitive, and saving time. Its average recovery is 98.4%, and relative standard deviation is 1.0%.

试验主要利用氨基酸的氨基与茚三酮水合物反应可生成蓝紫色化合物，该化合物最大吸收峰在570nm波长处，且此吸收峰值的大小与氨基酸释放出的氨基成正比，因此可作为氨基酸定量分析方法。

Experimental results showed that the relative average error of the proposed method, the hydrazine hydrate gravimetry and the ammonium chloroplatinate gravimetry is -0.14%~+0.13%,-0.21%~+0.21% and -0.13%~+0.14%, respectively, and the relative standard deviation of three methods is 0.05%~0.08%, 0.11%~0.14% and 0.08%~0.09%, respectively, for Pt content from 37% to 65%. Therefore, the accuracy and precision of the proposed method are almost the same with hydrazine hydrate gravimetry, and are a little better than ammonium chloroplatinate gravimetry. But it is rapid, economic, secure, easy to operate and environmental friendly.

结果表明：测定37%~65%的Pt含量，本法、氯铂酸氨重量法、水合肼还原重量法的相对平均误差分别为-0.14%~+0.13%、-0.21%~+0.21%、-0.13%~+0.14%，相对标准偏差分别为0.05%~0.08%、0.11%~0.14%、0.08%~0.09%，故本法的准确度和精密度与水合肼还原重量法的基本一致，较氯铂酸氨重量法的略好；但本法消解快速、节能、安全，操作简便，对环境污染程度小，适宜推广运用。

Analysis is focused on decadal average numbers of dense fog and its deviation coefficient.

文中还重点分析了6个代表站大雾与浓雾的趋势与月际分布特征。

We choose 20 cases of fungal rhinosinusitis who were treated in our department between the year 2007.4 and 2008.4 as our study group and 5 cases of purely nasal septum deviation as control group. The 20 cases contain 19 cases of fungus ball and 1 case of chronic invasive fungal rhinosinusitis. Their age fluctuate from 19 to 80, and the average age is 51 . All of the 25 cases blood samples were taken to detect the 1-3-β-D glucosan with the kit produced by Beijing jinshanchuan technology company and under the MB—80 quickly microorganismal detection system.

采用北京金山川科技公司生产的试剂盒及MB—80微生物快速检测系统分别检测中国医科大学附属盛京医院耳鼻喉科于2007年4月至2008年2月经鼻窦内窥镜手术治疗，并经术后病理证实为真菌性鼻窦炎患者(19例为真菌球型，1例为慢性侵袭性真菌性鼻窦炎)的血液样品20例，患者年龄19岁—80岁，平均年龄51岁，采取中国医科大学附属盛京医院耳鼻喉科于2008年1月住院单纯鼻中隔偏曲患者的血液样品5例作为对照组，患者年龄16—56岁，平均年龄32岁(以上血样标本的采集患者均已签署知情同意书)。

The karyotype resemblance -near coefficients among the thirteen bivalves were computed according to the relative length and arm ratio of chromosomes. their average, mean square, extreme margin and standard deviation. The kindredship of thirteen bivalves were analyzed with the method of UPGMA.

方法］根据染色体相对长度、臂比，以及它们的平均值、方差、极差、标准差等参数，计算了13种双壳贝类之间的核型似近系数，用UPGMA法对它们的亲缘关系进行了聚类分析。

Fostering the concept of multi-culture firmly and mastering the development of advanced culture correctly are conductive to resisting terrorism, separatism of nationalities and ultraism of religion, which is of great academic theoretical, immediate and profound historical si...

牢固树立多元文化的理念和正确把握先进文化的发展方向，有助于在世界范围内自觉地抵制恐怖主义，民族分裂主义和宗教极端主义。不仅具有重大的学术理论意义，而且也具有重大的现实意义和深远的历史意义。

But if anyone walks in the night, he stumbles, because the light is not in him.

11：10 若在黑夜行走，就必碰跌，因为那光不在他里面。