片语

Minimum Variance Hedge Ratio避险比率

variance-ratio transformation方差比变换

variance e ratio方差比

variance of ratio estimate比率估计值的方差

variance mean ratio method方差比率法

variance contribution ratio方差贡献率

f ratio方差比；F值

variance-ratio distribution方差比分布

variance of ratio比率的方差

英汉例句

• using variance ratio test, this study examines the weak form efficiency hypotheses for chinas commodity futures markets during 1999-2004.

  随机游动模型的方差比率检验方法可以被用于检验中国商品期货市场的有效性程度。

• in order to study the variation of the stiffness, the variance ratio of the stiffness within the same horizontal or vertical plane is computed.

  为了研究该机床静刚度的变化情况，计算同一水平面或竖直面内的静刚度变化率。

• the results show temperature spatial variations have high consistency, the variance ratio contribution of the first principal component is about 75%.

  结果表明：祁连山附近气温在空间上具有很好的一致性，年平均气温的第一主成分的方差贡献可占总方差的75%左右。

• the generalized variance ratio is a measure of efficiency.

  广义方差比是一个效率度量。

• the speed of the transportation land and the grassland are the biggest, whose annual variance ratio are 10.1% and 5.5%.

  其中交通运输用地和牧草地的变化速度最大，年变化率分别为10.1%和5.5%。

• through variance ratio test, we find the chinese warrant markets do not reach weak form market efficiency, and simple trading rules of technique analysis prove some kind of efficacy.

  通过方差比检验，我们发现中国权证市场不具弱有效性，简单交易规则一定程度上能在权证市场中有效预测。

• in this algorithm the local variance ratio of pixel value is considered in prediction process, and the entropy of the predictive error image is further reduced with error feedback technology.

  该算法在预测阶段利用像素值的局部变化率来对预测模型进行自适应调整，在编码阶段采用误差反馈技术进一步降低误差图像的信息熵。

• besides, the relations between variance ratio and correlation coefficient and between w-k statistics and correlation coefficient are found.

  此外，找到了方差比，w-k统计量与相关系数之间的精确关系。