对于样品中的主要组分,测定的相对标准偏差可控制在1%以内,对微量组分可控制在10%以内。
The relative standard deviation of the measurements could be controlled to be less than 1 % for major components and less than 10% for minor components in the solid samples.
根据这种关系可以判断金属化率和还原度测定值的某些偏差。
Some deviations can be judged of the measured value of metallizationrate and reducibility based on the relationship.
平行测定结果的相对标准偏差为3 ~ 5%,加标回收率为95 ~ 102%。
The recovery of sulfur was 95 ~ 102% and relative standard deviation 3 ~ 5%.
方法采用《消毒技术规范》(2002年版)有效氯含量测定方法以及标准偏差、方和根等统计学方法。
Methods Valid chlorine content measurement method and statistical methods such as standard deviation, and square and root etc in "Technical standard For Disinfection" (2002 version) was adopted.
本文论述了测定液相传质系数的几种主要方法。通过比较它们的测定结果,研究了产生偏差的原因。
This paper introduced main determination methods of mass transfer coefficients. By comparing their determined results, the cause to produce error was analysed.
对两种复方消毒剂中氯己定含量进行重复测定,相对标准偏差为3.2%。
Repeated measurement of chlorhexidine content in 2 kinds of compound disinfectants showed that the relative standard deviation was 3.2%.
在此情况下,只有柠檬酸根能得到满意的分离富集。 该方法已用于富集、测定电镀溶液、工业废水中的柠檬酸根,相对标准偏差在3 8%以下。
This process is already used for enriching and determining the radical in electroplating solution and industrially polluted water with a relative standard derivation of less than 3 8%.
该法对各组分含量的测定误差在5 %以内,相对标准偏差在6 %以内。
The relative error of the method is less than 5% and RSD is less than 6%.
对大庆台网深井摆和DK-1仪器测定的震级偏差进行了研究。
We study the magnitude deviation of borehole seismograph and DK 1 seismolograph in Daqing network.
测定并分析根尖孔面积、直径及其与测量偏差之间的关系。
The relationship between the area and diameter of the apical foramen and to the deviation was analyzed.
结果表明,对不同氘丰度的气体样品,单次测定的相对标准偏差好于0 2 % ,氘丰度测量值在0 2 %的误差范围内是可信的。
The results indicate:relative standard deviations are better than 0.2% for gas samples of different deuterium abundance. Measure value is believable in the error range of 0.2%.
用加入稀释法测定了回收率,平均回收率为100.9%,标准偏差为1.3%。
The direct potentiometry for samples shows 100.9% of average recovery and 1.3% of standard deviation.
首先对被分析物料实验测定取样标准偏差,或进行一些有关的化学测试和物理测试,以确定取样常数。
The sampling constants can be estimated by means of sampling relative standard deviation or some relevant chemical and physical informations.
浓硫酸和高氯酸消解后,用钼-锑-钪复合显色剂测定植酸钙中的磷含量,偏差不超过5%;
The phosphorus content of phytin was determined in molybdate-antimony-scandium color agent after it was digested by concentrated sulfuric acid and perchlorate, with its deviation of no over 5%.
利用德令哈地震台dd - 1记录到的746个近震,对其测定的震级偏差进行统计计算,发现DD - 1测定的震级偏小。
The magnitude deviation is statistically calculated by 746 local earthquakes recorded by DD-1 at Delingha station, and it is found that the magnitudes by DD-1 are smaller.
所有20个检测项目的测定结果的预期偏差均可接受。
进行了控制电位、支持电解质种类等条件选择,使得测定背景电流小,标准偏差低于0。
The selection of conditions on controlled potential, the kinds of supporting electrolyte and so on lessns the background current and makes the standard deviation less than 0.
将该方法用于镀镍电极的镍磷含量分析,测定结果的相对标准偏差不大于5.0%。
The method was effective in analysing the content of nickel and phosphor of the platinized nickel electrode, and the relative error range to the standard was not more than 5.0%.
研究了酸度、碘化钾浓度、还原剂用量对测定影响。测定的相对标准偏差为1.08%,方法简单、快速。
Effects of acidity, concn. of potassium iodide and dosage of reducing agent on determination are investigated. It is simple and rapid with relative standard deviation 1.08%.
经过验算,单台测定震级与山西省地震局台网测定震级的偏差缩小,对提高这2个台震级的精度有一定效果。
Through the check, the deviation between the magnitude by the single station and by the network of Shanxi province decreased, thus improving the accuracy of magnitude determinated by the 2 stations.
选择类型标样的不同、试样加工方法的不同,都可能造成直读光谱仪测定结果的偏差。
Many factors may create the deviauon of determination result for spark discharge atomic emission spectrometric analysis, such as type standard choice and processing method for test spcimen.
目的研究血清甲状腺素结合能力对游离甲状腺素免疫测定法检测偏差的影响。
Objective To study the effects of the serum thyroxine-binding capacity on the biases in free thyroxine immunoassays.
应用该法测定腐肥中的硼测定回收率为100%,标准偏差为2.04,相对标准偏差为2.04%。
Experiment results shows the rate of recovery is 100%, the standard deviation is 2.04, the relative standard deviation is 2.04%.
介绍了反向偏差的测定方法及其随进给速度变化而变化的特点,并基于该特点给出了相应的补偿方法。
The testing way of reversal value was introduced, and the complement method was presented based on the character that reversal value varys with feed speed.
本文论述了各种测定垂线偏差的方法及其在工程测量中的实际应用。
This paper deals with different methods for determining the deflections of the vertical and some of its practical applications to engineering surveying.
提出了保证垂线偏差测定精度的观测设计准则。
An observation design criterion which ensures the observation precision of the vertical deflection is presented.
采用高温催化-库仑滴定法测定植物叶片中的硫含量,相对标准偏差为1.5%,准确度为99.7%。
The sulfur content in Plant leaf is determined by high temperature catalysis-coulomb titration with the RSD is 1.5% and the accuracy is 99.7%.
对各组分测定的相对标准偏差均小于5%。
两种方法测定不同类型水中的总铬结果无明显差异,相对偏差均小于10%,回收率为86~119%。
There had no obvious difference between these two methods, the relative standard deviation was less than 10%, sample recovery rate was 86~119%.
两种方法测定不同类型水中的总铬结果无明显差异,相对偏差均小于10%,回收率为86~119%。
There had no obvious difference between these two methods, the relative standard deviation was less than 10%, sample recovery rate was 86~119%.
应用推荐