变异系数

[结论]本实验SD大鼠的体重增长、脏器实重、脏器系数、变异系数和正常参考值范围，与其他实验室报道的结果总体接近，略有差异。

The testing results ( weight increment , weight of the main organs , organ coefficient , the CV and normal reference value ) in our laboratory are similar to the other labs .

R1和R3的变异系数较大，特别是R3达到28.82，说明易受环境影响；

The CV of R 1 and R 3 were bigger , and especially for R 3 which reached to 28.82 , which shows that R 3 was affected by environment easily ;

性状的遗传方差、变异系数及重复力（R）的枝龄有关。

Variability coefficient and repeatability ( R ) of characters were related to branch ages .

铁（Fe），硼（B），锰（Mn）等营养元素丰富，且变异系数较小；

Ferrum , boron , manganese are rich and coefficients of variation are small .

变异系数表明，除pH属于弱变异外，其它土壤肥力要素都属于中等变异。

Using coefficients of variation , all soil fertility elements , except for pH , were moderately variable .

快速ELISA试验结果变异系数（CV）为328%～769%；

The variation coefficient of the fast ELISA is 3 28 % 7 69 % .

Weibull分布变异系数的区间估计

Confidence interval estimation for the coefficient of variation of the Weibull distribution

结果使用pH值10.5硼酸缓冲液，转铁蛋白连续进样出峰时间的变异系数（CV）为5.22%；

Results With the pH 10.5 borate buffer , moving time coefficient of variation ( CV ) of transferrin was 5.22 % .

在计算公共K值时，笔者发现按常规的以变异系数v/m作为剔除异常资料的指标效果不理想。

While calculating common K , the writers found that the coefficient of variation v / m , as an index to reject abnormal data , was not suitable .

土壤总盐和有机质的变异系数由表层向底层逐渐增大，而pH值的变异系数在垂直方向上差异很小。

The variability intensities of soil salt and organic matter are increase from surface to bottom , while the vertical deference of the variability intensities of pH value is unobvious .

间接ELISA的精密性（变异系数CV）为6.98%，竞争ELISA为5.10%。

The preciseness ( Variability Coefficient , CV ) of the indirect ELISA was 6.98 % , and the competitive ELISA was 5.10 % .

用Taylor二阶展开随机有限元法分析围护桩整桩的位移和弯矩可靠度随地面荷载等变量变异系数变化规律；

Taylor second-order series method analyses the reliability of pile 's displacement and moment varying along with ground load and other parameters ;

地径广义遗传力（h2）为（82.61±8.42）%，遗传变异系数为15.28%。

Broad heritability of collar diameter is ( 82.61 ± 8.42 ) % , genetic variation coefficient is 15.28 % .

采用加权变异系数、锡尔系数分别对人均GDP差异、人均收入差异的来源与构成进行了分解。

Adopted the variance coefficient and the Theil index , the thesis decomposed the factors of disparities of Per Capita GDP ( PGDP ) and Per Capita Income .

随着DEM分辨率的降低，地形起伏度和高程变异系数递增，而沟壑密度和地面粗糙度递减。

As DEM resolution goes down , the relief amplitude and coefficient of variation increases , while gully density and surface roughness decreasing .

温岭市不同区域土壤重金属含量变化比较大，尤其是汞Hg和镉Cd，变异系数较大。

The changes of soil heavy metals in different parts of Wenling is relatively large , especially Hg and Cd , which have larger coefficient of variation .

同一芯片内蛋白质峰强度的变异系数（CV）值为0.161，M/Z的CV值为0.0004。

The coefficient variation ( CV ) of protein intensity and M / Z value was 0.161 and 0.0004 within the same protein chip .

每组检测对象晨尿GH浓度变异系数均大于30%，离散程度大。

The coefficients of variation of HGH_U in all group were higher than 30 % , which indicated a low dispersion degree .

此外，对产品的含量进行了HPLC的定量分析研究，该方法未见文献报道，方法变异系数为0.84%，回收率98%以上。

Furthermore , the content of the product is analyzed by HPLC for quantitative analysis . Relative standard deviation of the method : 0.84 % , accuracy : ≥ 98 % .

粒度分析表明产品平均粒径为158nm，变异系数（CV）为0.194。

The result shows that an average particle size is 158 nm by laser particle analyzer , which coefficient variance ( CV ) is 0.194 .

方法采用LMS（λ中位数变异系数）法对西安市0～18岁儿童青少年身高百分位数进行拟合。

Methods Using LMS (λ median coefficient of variation ) method fitting height centile curve for children and adolescence aged 0 ~ 18 years .

研究表明，该材料具有良好的力学性能；材料的抗弯强度、断裂韧度和维氏硬度均服从Weibull分布，力学性能的变异系数小，性能稳定；

It is shown that the material possesses good mechanical properties and its flexure strength , fracture toughness and Vickers hardness well obey Weibull distribution .

在构成证候的指标变化评价中，咳嗽、肺部听诊、X线CT等10项指标满分比大于0.9，变异系数小于0.34；

Cough , lung auscultation , Chest X ray and so on were main components in the syndrome and the ratio of full score and the coefficient of variation were respectively more than 0.90 and less than 0.34 ;

变异系数变化率（VR）可以作为评价核心种质变异程度的重要参考参数。

The variable rate of coefficient of variation ( VR ) could act as an important referential parameter for evaluating the variation degree of core collection .

茎尖途径形成的再生植株R1代变异系数分析发现：在一次有效枝起点上表现出的差异最大，变异频率为44.54%；

The result of analysis about CV ( coefficient of variation ) in R_1 generation suggested that variation in zero point for 1st branches was the highest , and it 's frequency of variation was 44.54 % ;

前房注射组角膜内皮细胞密度减少、面积变异系数增大与其他组相比差别有统计学意义（p0.05）。

Corneal endothelial cell density reduced and size coefficient of variation increased in the group of Anterior chamber injection as compared with the other groups the difference was statistically significant ( p0.05 ) .

BSPM法测得QTd的变异系数低于12导心电图。

Lower coefficient of variance of QTd was measured by BSPM than by 12 lead ECG .

超声流量仪检测FRC的变异系数为74%（范围0～26%）。

The mean coefficient of variation of FRC was 7.4 % ( range 0 ~ 26 % ) .

回收率为99.81%；CV（变异系数）为0.18%。

The minimum detectable value of sorbic acid is 1 × 10-9 g , coefficient of variation ( CV ) is 0.18 % , recovery rate is 99.81 % .

所以，从评价卫生指标的角度来看，用R、A考核理化检验方法和优劣比变异系数（CV%）更科学、更合理。

The R and A was judged to be more scientific and reasonable than the coefficient of variation for the examination of inspection methods ( which is superior ) assuming that the health index will be qualified or unqualified .