查询词典 mean square

The results show that the calculated values agree with the experimental data. The mean square amplitude of (110) plane surface exhibits anisotropic behavior. The calculated anharmonic constants indicate that the anharmonic effect of (111) plane is the smallest.

结果表明，计算值与已有的实验数据比较相符；(110)面的原子振动振幅表现出明显的各向异性；由声子频率随温度变化关系得到的非谐常数表明(111)面的非谐效应最弱。

In Chapter 3, by establishing a L-operator inequality and using the properties of M-matrix and stochastic analysis techniques, some sufficient conditions ensuring the exponential dissipativity in mean square of impulsive stochastic functional differential equations of Ito-type are obtained.

第三章，通过建立L-算子不等式，运用M-矩阵的理论和随机分析技巧，获得了一类脉冲随机泛函微分方程均方指数耗散的充分条件。

In the study based on prior image constraint, the approach using minimum information discrimination to achieve the restored image constrained by prior image is proposed, and two approaches are given, which called minimum-mean-square-error validation and fiducially strategy to count regularization parameter adaptively for new constraint item.

在基于先验图像约束的方法中，提出利用最小鉴别信息构造先验图像对图像复原结果的约束，给出了基于最小均方误差验证和置信策略自适应计算新约束项正则化参数的两种方法。

The Pick-pick Signal Noise Ratio PSNR or Mean Square Error MSE does not conform to subjective psychological sensation, while subjective assessment is usually inexactly and has subjectivity.

通常使用的峰—峰信噪比或均方误差与主观感觉并不相符，而主观评价又存在主观性和不确定性，其结果往往因人而异。

The karyotype resemblance -near coefficients among the thirteen bivalves were computed according to the relative length and arm ratio of chromosomes. their average, mean square, extreme margin and standard deviation. The kindredship of thirteen bivalves were analyzed with the method of UPGMA.

方法］根据染色体相对长度、臂比，以及它们的平均值、方差、极差、标准差等参数，计算了13种双壳贝类之间的核型似近系数，用UPGMA法对它们的亲缘关系进行了聚类分析。

The trajectory of the center of pressure on the transverse plane, and the range of displacement, velocity, and root mean square of the COP on the mediolateral and anteroposterior planes were examined.

结果发现就女性而言，老年人在QSEO及QSEC时其左COP之位移速度，在QSEC之左右平方根平均值，以及在TS之左右位移范围较年轻人大。

The classical principal component analysis is one of the most effective feature extraction methods. PCA essentially gives the optimal representation in a minimum of mean square sense, so it is usually used to minify the dimension of high dimensional image pattern modes.

传统的主分量分析方法是最为经典的图像特征抽取方法之一，由于其本质上是在最小均方差意义下给出了模式样本的最优表示，所以它通常被作为对高维图像模式进行降维的一种常用方法。

Secondly, on the basis of the analysis of the spatial-temporal feature of background and infrared targets in infrared sequence, a method for clutter suppression and noise removement based on the association of spatial self-adaptating Two Dimensional Least Mean Square background predict and temperal Higher-Order Cumulant is presented, and its improved version suitable for strong edge rejection and gaussian noise suppression is proposed.

然后针对红外图像序列中弱小目标和背景的空间和时间特性，提出了一种空域改进的自适应二维LMS背景预测和时域高阶累积量相结合的杂波抑制和滤波降噪的预处理方法，理论和实验结果表明，该方法对于抑制强起伏的红外背景杂波和去除高斯噪声的影响非常有效。

The normalized root mean square errors of input function using ICA in sinogram and image domain were 0.28 and 0.57, respectively.

在大鼠实验中，人工抽血及使用微量吸管抽取全血等手续皆会造成标准值的误差；我们会做多一些动物实验来降低此误差。

The CMP record was processed by conventional flow, and stacked and deviated sections were obtained, the response characters of pinchout sand bodies are analyzed, the seismic attributes such as root-mean-square amplitude and its variation are determined as sensitivety parameters of oil and gas reservoirs, a concept seismic-geologic model of sublacustrine fan reservoir is established, by which the multiplicity and limitation are reduced for prediction, a basis is provided for seismic interpretation.

对共炮点记录进行常规处理，得到叠加和偏移剖面。分析尖灭砂体的地震响应特征，确定了均方根振幅和振幅变化率等地震属性为含油气储层敏感参数。并建立了湖底扇储集体概念化地震地质模型，减少了预测的多解性和局限性，可为地震解释提供科学依据。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。