平均偏差

The mean recovery of fourteen homologous series of benzene is 85%, and the relative deviation is below 5%.

本方法对十四种苯系物的总平均回收率为85%，相对标准偏差在5%以下，最低检测限达3.25×10－9g。

The average recoveries of chloropicrin in vegetables and fruits at 0.02~1 mg/kg fortification level were 92.2%~111%, with relative standard deviations of

氯化苦的添加浓度在0.02~1mg/kg范围内，平均回收率为92.2%~111%，相对标准偏差为1.9%~7.2%，均在农药残留测定允许范围内。

Because there is a declension when we count the burning rate of propellant with geometry comburent law, so the notion of relative pressure impulse is introduced which correspondent statistical average thickness in the law of gasses generation, ultimately acquire theΨ-Z curve by p-t curve which is measured by closed bomb.

几何燃烧规律在计算发射药的燃速时存在偏差，因此引入与统计平均厚度概念相对应的相对压力冲量来代替相对厚度，根据密闭爆发器实测的p-t曲线直接计算得到Ψ-Z曲线，建立了发射药实际燃烧速率模型，并编程进行了模拟计算。

Based on the k-means algorithm, mean relative deviation is presented to measure the degree of denseness, and dynamic weights of variables are associated with it.

在k-means算法基础上，提出利用平均相对偏差对数据的维分布密集度进行度量，并根据空间分布的密集度动态地给属性赋予权值。

Methods:a solid-phase extraction and gas chromatography-mass spectrometry procedure for the simultaneous detection of tramadol and its main metabolite in urine has been developed.results:the linearity of the tramadol solution from 0.1 g/ml to 100 μg/ml is fine ,and correlation coefficient is 0.9957.the average recovery was 99.21%,and the relative sandard deviation was 2.83%.conclusion:it is a rapid,simple,accurate and sensitive method.it is also an effective method for rapid detection whether there is tramadol in urine of druggy.

采用c18固相萃取法对尿中曲马多原体及其主要代谢物进行提取，利用gc-ms对其进行检测。结果：线性范围为0.1~100μg/ml（r=0.9957，n=6），平均回收率为99.21%，相对标准偏差为2.83%，最低测量限为 0.1 g/ml 。结论：本实验研究建立了尿中曲马多及其代谢物的快速、简便、准确、灵敏的检测方法，可作为快速检测吸毒人员尿中是否含有曲马多的一种有效的方法。

This article estimates the extreme loss distribution with extreme value theory, estimates the shape parameter with HKKP estimator, which is unbiased to small sample data, selects the right threshold by selecting smallest mean square error of the estimated cumulative distribution function and empirical cumulative distribution function and based on the extreme value theory method, this article estimates the extreme loss distribution and the p-percentile operational loss under certain believe range for Chinese commercial banks, then calculates the operational risk supervise capital.

本文利用极值理论对中国商业银行操作损失极端值分布进行估计，针对尾参数估计的来用传统Hill佑计对小样本数据容易产生偏倚的情况，提出了采用Hill佑计的改进―小样本无偏估计的HKKP佑计来估计操作损失的尾参数，针对由于阈值确定不准确导致结果偏差大的情况，采用最小化估计的累计概率分布与经验累计概率分布平均平方误差的方法确定较精确的阈值，估计出给定置信水平下操作风险损失的分位数，从而使得中国商业银行操作风险监管资本的测定成为可能。

The relative carves between saving test time, relative error of the parameter estimation and terminating number are given.

给出了平均节省试验时间及参数估计相对偏差与截尾数之间的关系曲线。

The results demonstrate that: ARMA(1,1) model,auto-regressive model with GDP as exogenous variable,auto-regressive model with policy as exogenous dummy variable,and logarithm linearity and removal average model are all valid models for forecasting tax revenue.

结果表明：ARMA(1，1)模型中，以GDP为外生变量的自回归模型、以政策因素为虚拟外生变量的自回归模型以及对数线性移动平均模型都是预测税收收入的有效模型，但以GDP为外生变量的自回归模型在预测2005年税收收入时，预测值与实际值的预测偏差仅有1。

Based on the concept of averaging electromagnetic field, the optical constants of Goodwin synthetic ash, Chinese Qitaihe coal ash and Russian ash Br-1 were calculated by Maxwell-Garnett and Bruggeman effective medium theory. Computational results show that, for the synthetic coal slag, the optical constants estimated by EMT consist with the experimental values, but for the coal-ash produced in combustion, the optical constants estimated by EMT using industrial analytical species deviate far from the experimental values.

基于电磁场平均的概念，利用Maxwell-Garnett和Bruggeman有效介质理论分别对Goodwin人工合成灰渣、中国七台河矸石煤灰、俄罗斯褐煤灰Br-1 3组煤灰的光学常数进行计算，结果表明，人工合成灰渣光学常数的有效介质理论值与实验值吻合，而利用工业分析成分，燃烧生成煤灰光学常数的有效介质理论值与实验值有较大偏差。

Results When select 1mol/L DTA in TISAB,the relative error of determination is smaller than 5.2%.Although the basis value is a little high,the filter is good absorbent of gaseity and aerosol fluoride.As for the pro-procedure,instead of dealing with supersonic for 15min in 40℃ stir in HCl for 1 hr.The average recovery of standard material is 93.9%.

结果 选用1mol/L柠檬酸钠作TISBA测定偏差＜5.2%；经浸渍处理的滤纸本底氟略有升高，但对气态或气溶胶态都能更好地阻留吸收；前处理方法可用酸浸搅拌成纸浆浸放1h代替40℃超声15min；用煤飞灰标准物质加标回收，平均回收率93.9％。

I'm strongly against the death penalty — it's an eye for an eye.

我不赞成死刑——这是以牙还牙的报复行为。

And to get you the support you need, we're enlisting all elements of our national power: our diplomacy and development, our economic might and our moral suasion, so that you and the rest of our military do not bear the burden of our security alone.

并给你们所须的支援，我们正徵召国家所有各种的力量：我们的外交及发展，我们的经济力量与道德劝说，所以你们与其他军人不须要孤独地负起国家安全的责任。