查询词典 standard deviation

The ultrasonic-assisted solvent extraction and quantitative analysis of the oxine-copper residues in soil with ion pair of antiphase HPLC was established. This methods mainly uses XBridge C5 column and UV detector by using waters phase of phosphatic buffered solution/acetonitrile (60:40, by vol) as mobile phase with 0.8 mL/min flow ratio and UV detection at 245 nm. The residue time was 4.72 minute. The linear correlation of this method was 0.9987. The recovery rate was 76.2 to 108.7%. Comparatively standard deviation was 0.6 to 3.37%. The detection limits of method was 0.05 mg/kg.

建立了土壤中喹啉铜的超声波辅助溶剂提取－反相离子对高效液相色谱法的残留分析方法，该方法使用XBridge C18色谱柱和可变波长紫外检测器，并以水相磷酸盐缓冲体系－乙腈（体积比60：40）作流动相；流速为0.8mL/min；检测波长为245nm；保留时间为4.72min；线性相关系数为0.9987，回收率在76.2%~108.7%之间，相对标准偏差在0.6%~3.37%之间，对土壤的最低检出限为0.05mg/kg。

The relative standard deviation in area obtained from time mode for berberine hydrochloride,antipyrine,sulfadimidine and sulfadiazine is 42.5%,44.5%,42.9%,45.0%,respectively.

在阐述了这种记录模式优点的基础上，用常用的硼砂和磷酸盐体系在不同的电压和固定电压下分离了4种药物，其迁移时间的相对标准偏差分别在41.5和1.90％以上，而相应的电通量的标准偏差都在1.05％以下，这进一步从实验角度证实了电通量域模式记录电泳谱图的优点：具有极强的抗电场强度波动和温度波动的能力，提高了再现性。

Frequency distribution, percentage, arithmetic mean and standard deviation were used to describe quantitative data.

并使用频数，百分比，算数平均数，标准差对合格数据进行描述。

The Shanghai and Shenzhen stock markets in the pool for periodic auction and continuous auction which formed Mean, Maximum, Minimum, Standard deviation, Skewness and Kurtosis have a consistent pattern.

三沪深两市在集合竞价和连续竞价下形成的收益率均值、中值、最大值、最小值、标准差、偏度、峰度有一致的规律。

This section simply introduces the basic principles of the conventional analysis of time series (mean, variance, standard deviation; covariance and correlation coefficient; autocovariance and autocorrelation coefficient), frequency spectrum analysis and wavelet analysis.

本文简单地介绍了传统时序分析（包括平均值、方差和标准差；协方差和相关因子；自协方差和自相关因子）、频谱分析和小波分析的基本原理。

The tax payment appraised the system the appraisal method, mainly is through the use related mathematical model, establishes the tax payment appraisal target system and the target peak value system, carries on the automatic computation analysis to the data message, by discovers deviation to surpass prearranges the standard the questionable point factor, automatically screens the taxpayer by the computer which has the questionable point.

纳税评估系统的评估方法，主要是通过利用相关数学模型，建立纳税评估指标体系和指标峰值体系，对数据信息进行自动计算分析，以找出偏离度超出预定标准的疑点因素，由计算机自动筛选出有疑点的纳税人。

The method is based on the column average and standard deviation of raw image.

直方图均衡法是从landsat发展而来的算法，这种

Average angle and standard deviation also available.

平均值和标准背离值同样是被用到的。

Minimum, maximum, average, and standard deviation of the time interval from the packet generation to the end of transmission.

最低，最高，平均和标准偏差的时间间隔从分组一代的结尾传输。

The mean and standard deviation of average diameter,midpoint diameter,coronary length and curvature were presented.

目前，狭窄百分比是临床上对病灶冠脉狭窄的病理分析的一个惟一的有效的标准。

There are different types of personal loans available.

有许多不同类型的个人贷款优惠。

The above mentioned teaching model of spiral rising can be used to avoid rigidness in teaching.

上述螺旋式上升的教学模式，可以避免教学形成模式後的僵化现象。