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平均误差
相关语句
  mean relative deviation
    The result shows that the predicted critical volumes agree with the experimental data satisfactorily,the mean relative deviation is 1.88%, less than that of the group contribution method.
    对烯烃的预测结果表明 ,临界体积预测值与实验值的一致性令人满意 ,平均误差 1 88% ,计算精度优于基团贡献法
短句来源
    Taking temperature as input vector and solubility as output vector to set up radial basis function artificial neural networks, the results indicate that RBF can fast realize convergence approaching a function. The mean relative deviation of train aggregate is 0.81%, and test aggregate is 1.64%.
    以温度为输入矢量、溶解度为输出矢量,建立RBF神经网络,结果表明,RBF神经网络进行函数逼近可实现网络的快速收敛,训练集平均误差为0.81%,测试集平均误差为1.64%.
短句来源
    By using the NRTL equation for non-electrolyte solution, the VLE isotherms for [bmim][PF_6]-H_2O and [C_8mim][PF_6]-H_2O binary systems were correlated with deviation within 2% and the VLE data at other temperatures were predicted with the mean relative deviation within 5%.
    采用非电解质溶液NRTL 方程表示溶液的非理想性, 关联了[bmim] [PF6] H2O及[C8mim] [PF6] H2O二元体系的等温汽液平衡, 关联误差在2%之内; 预测了这些体系在其他温度下的汽液平衡, 预测的总平均误差均在5%之内.
短句来源
    The results calculated show that the predicted values of boiling pointsagree with the experimental data satisfactorily. and the mean relative deviation is only0.05%。
    计算结果表明,烷基苯沸点计算值都很接近实验值,平均误差0.05%。
短句来源
    The results calculated show that the predicted values of densities are in good agreement with the experimental data, and the mean relative deviation is 0. 053%, the mean absolute deviation is 0.00058 (M,a.m-3. Not only can the quantitative relation predict the densities of normal 1 -bromoalkane but can help to discover the secret among the structure -property relationship of matter.
    应用这一定量关系,不仅能够合理表征直链1-溴烷烃结构与密度的关系,而且能够预测密度。 结果表明,密度预测值都很接近实验值,平均误差0.053%。
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  “平均误差”译为未确定词的双语例句
    From comparison of calculated value and experimental data, the average of AAD (Overall-average deviation) of binary LLE calculation for 10 systems containing ILs is 3. 228% with NRTL model and 2. 691% with UNIQUAC model.
    通过比较计算值与实验值,结果令人满意,NRTL和UNIQUAC方程计算得到的10个体系的全体平均误差(AAD,Overall-average deviation)的平均值分别为3.228%和2.691%。
短句来源
    The average absolute deviation for the 441 experi-mental data is 2.3%.
    本方法对上述441个实验点的绝对平均误差为2.3%。
短句来源
    Results: The [η] obtained from Solomon-Ciuta's equation and Maron's equation are in good agreement with that obtained from Huggins' equation with a maximum relative deviation of <0.8% and < 0.7 % respectively.
    结果:用Solomon-Ciuta方程和Maron方程得到的[η]值与用Huggins方程图解外推法得到的[η]值较一致,最大平均误差分别小于0.8%和0.7%。
短句来源
    A mathematical model to calculate chemical exergier was established by group connectivity index,which has a simplest form such as E~0_(x.ch)(kJ/mol)=(1 681.831 5)(~1Ψ) +807.976 2.It was shown that the largest error is not higer than 0.28% and mean relative error is not more than 0.069% for selected substances.
    根据基团连接性指数提出了一个用于计算化学火用的数学模型 ,其形式为 E0x. ch( k J/ mol) =1 681 .83 1 5 ( 1 Ψ) +80 7.9762 .计算结果表明 ,最大误差小于 0 .2 8%,平均误差不大于 0 .0 69%.
短句来源
    The mean difference between the theoretical and experimental frequencies was found to be 19.0 cm~-1. According to the normal modes and IR intensities in DFT calculation, we gave a consummate and reasonable assignment and interpretation to the observed vibrational spectrum of strychnine.
    理论计算和实验测定频率的平均误差为19·0cm-1.根据DFT计算的振动模式和IR光谱强度值对目标分子的实验振动基频进行了完善的和合理的指认和解释.
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  mean relative deviation
It shows that the overall mean relative deviation (OMRD) of the Dodge-Metzner correlation is the minimum, 1.5%.
      
The system's pressure resulting from aT x →p calculation procedure can be represented with a mean relative deviation of 1.3%.
      
The mean relative deviation from the lab method calculated according to Hill was 6.87% for INRatio?, which is rated "very goo", and 9.72% for Coaguchek? S ("goo").
      
The mean relative deviation is between -2 to 15% between 15 and 35 km altitude, which is a quite promising result.
      
The most representative mechanism with respect to average predictions is SAPRC99, with a mean relative deviation of 12%.
      


A simplified volumetric method for the determination of sulfur in organic compounds is described. The results obtained by this method are in agreement with those obtained by the gravimetric method, The method is stated as following: Weigh accurately a sample containing 30—75 mg SO_4~- into a nickel crucible containing 1 g. of KNO_3 and 8 g. of KOH. Heat the crucible carefully with a small flame until the contents melt, increase the heat gradually until the decomposition is complete. Leach the melt with water,...

A simplified volumetric method for the determination of sulfur in organic compounds is described. The results obtained by this method are in agreement with those obtained by the gravimetric method, The method is stated as following: Weigh accurately a sample containing 30—75 mg SO_4~- into a nickel crucible containing 1 g. of KNO_3 and 8 g. of KOH. Heat the crucible carefully with a small flame until the contents melt, increase the heat gradually until the decomposition is complete. Leach the melt with water, acidify with HCl and heat gently until bubbles cease to evolve. Filter, dilute the filtrate to about 60 ml. and after neutralizing with 6 N NH_4OH, add 0.2 ml. 6 N HCl. Heat to 70℃, add gradually the benzidine hydrochloride reagent to precipitate the sulfate in the solution. After cooling in an ice bath for 1 hour, the precipitate is filtered from the solution. Suspend the precipitate in water, heat to 80℃ and titrate with 0.1 N NaOH solution, using phenolphthalein as indicator.

测定一般有机化合物中的硫含量,可將有机物先用KOH—KNO_3破坏,使成硫酸联苯胺沉淀后,再滴定其中的硫酸根。应用本法可测定相当于30—75毫克硫酸根的含硫有机化合物,所得結果准确(表1,3)。平均誤差为±0.11%(表2),操作比重量法简单,所费时間亦少,因此可作为测定有机物中硫含量的快速方法。

A chromatographic analytical procedure has been developed for the gaseous impurities in concentrated acetylene gas manufactured from natural gas.In this work a thermal conductivity detector,a potentiometer recorder,and hydrogen as carrier gas were used. Column I packed with a mixture of salicylaldehyde and liquid paraffin as stationary liquid was used to separate and analyse the components such as allene,methylacetylene, butadiene,vinylacetylene,and diacetylene.The time required for a complete analysis is about...

A chromatographic analytical procedure has been developed for the gaseous impurities in concentrated acetylene gas manufactured from natural gas.In this work a thermal conductivity detector,a potentiometer recorder,and hydrogen as carrier gas were used. Column I packed with a mixture of salicylaldehyde and liquid paraffin as stationary liquid was used to separate and analyse the components such as allene,methylacetylene, butadiene,vinylacetylene,and diacetylene.The time required for a complete analysis is about 18 minutes. Column Ⅱ containing a serial packing of adsorbents of active carbon and Type 5A molecular sieve was used to analyse oxygen,nitrogen,methane,and carbon monoxide. Carbon dioxide,ethylene,and acetylene were analysed on column Ⅲ filled with active carbon and silica gel in series.Samples were injected separatively.The total time of analysis is about 20 minutes. The results of determination and computation indicate that the minimum detectable quantity of gaseous impurities is 1.16—36 ppm.With impurities ranging from 0.005 to 0.5%,the reproducibility expressed as relative average deviation is less than ±10%,and the accuracy expressed as relative average error is less than ±5%.

为测定天然气制取的浓乙炔中的微量杂质气体,采用氢作载气,自制热导池为鉴定器,国产大华电子电位计为记录仪的气液色谱及气固色谱法,以水杨醛和液体石蜡混合固定液的色谱柱分离测定其中的丙二烯、甲基乙炔、丁二烯、乙烯基乙炔、丁二炔等五个组分,一次分析时间为18分钟。另以活性炭柱和5A分子筛柱串联及活性炭柱和硅胶柱串联,两次进样,分离测定其中氧、氮、甲烷、一氧化碳、二氧化碳、乙烯等组分,一次分析时间20分钟,本法的最低检出浓度为1.16至36.0×10~(-6),杂质气体含量在0.5至0.005%范围内的分析重复性以相对平均偏差表示<±10%,准确度以相对平均误差表示<±5%。

A group-contribution technique was proposed for predicting solubility parameter.98 group increments were determined by regression of 441 experimental data,which were carefully selected from a large database. The average absolute deviation for the 441 experi-mental data is 2.3%.

本文依据经过评选的441种物质的实验数据,建立了由基团贡献概念估算溶度参数的方法。98个基团的贡献值由实验数据回归求得。本方法对上述441个实验点的绝对平均误差为2.3%。

 
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