均方根

Through simulation,the maximum root mean square value of weighted acceleration and the root mean square value of total weighted acceleration of given points are obtained directly.

通过仿真可直接获得给定测点的加权加速度均方根值分量的最大镇和总加权加速度均方根值。

Taking the damping and rigidity of automobile seat and suspension system as design variables, the root mean square value of acceleration seat and relative dynamic loading of tire as objective function, two optimization design models of passive suspension parameters were established according to riding comfortableness and pavement breakage.

以汽车座椅和悬架系统的阻尼与刚度作为设计变量，综合考虑车辆的乘坐舒适性和对路面的损坏性，以座椅加速度均方根值和轮胎相对动载荷均方根值作为目标函数，建立被动悬架参数的两目标优化设计模型。

Of endogenous variables with the Root-Mean-Square Percent Error between simulated values and actual values less than 5%, and 81. 8% of endogenous variables with RMSPE less than 10%, which implies that the overall goodness of the model is satisfactory.

检验结果表明，动态模拟值与实际观测值的均方根相对误差低于5%的内生变量占全部内生变量的59.1%，而均方根相对误差不超过10%的内生变量占81.8%，说明模型对观测值具有良好的总体拟合性能。

The simulation result shows that this dynamical prediction model has the performances like, better generalization, stronger robust, and preferable accuracy (the relative root mean square error of air is lower than 10%, and the relative root mean square error of oxygen is lower than 19%).

仿真研究结果表明：该动态预估模型具有较好的泛化能力和较强的鲁棒性，并具有较好预测精度(风量预测的相对均方根误差小于10%，氧量预测的相对均方根误差小于19%)。

In this article, the effect on the surface topography of the same material was analyzed by different processing methods, the value of surface parameter arithmetic mean Ra, rootmean-square roughness Rq and gradient root-mean-square value Zq were used to appreciate the surface topography, and the data were processed with the software Matlab.

分析不同加工方法对同一种材料表面形貌的影响，采用表面形貌统计参数中的轮廓高度算术平均值Ra轮廓高度均方根值Rq、坡度均方根值乙对表面形貌进行评价。

The results show that the root-mean-square relative error of GA-SVM model is only 2.25%, which is less than those of SVM and back propagation model by 0.58% and 1.93%, respectively.

研究结果表明：用GA-SVM算法得到的均方根相对误差仅为2.25%，比用SVM模型和BP神经网络所得的均方根相对误差比分别低0.58%和1.93%。

The relationship between barotropic tidal currents and sea level were established for the first 45-day period using the transfer functions and harmonic analysis, and then carry the prediction for the second 45-day period. There is very good agreement between the observed and predicted semidiurnal tidal current, the rms error is less than 3 cm s-1. However, prediction on diurnal tidal current is rather disappointing, the rms error is about 19 cm s-1, suggesting strong baroclinic tidal component may have a significant contribution to the tidal current, which is not registered in the sea level records.

利用转换函数与调和分析两种方法，验证水位预报正压潮流的可行性，将观测资料分为等长的两段时期，藉由第一段时期约45天的正压潮流与水位的关系，预报下一段时期约45天的正压潮流，结果显示半日潮流的观测值与预报值大致符合，其均方根约在3公分/秒以下；但是全日潮流的观测值与预报值的差异大，其均方根最大可达到约19公分/秒，推测其原因为斜压潮分量大而影响潮流，但是不会对水位资料造成影响。

The model was built by partial least squareregress.Compared to the model using the whole original spectra,the root mean square error of predictionof glycerol gonolaurate and lubricant was improved from 7.9557 to 6.6787,and 0.2383 to 0.1031 respectively.(4)In uninformative variable eliminationalgorithm,the cutoff threshold of UVE is evaluated by adding a noise matrix which size is the same with instrumental response data.

提出的方法应用于月挂酸成分预测的红外光谱和机油分类的可见-近红外光谱中，用偏最小二乘回归建立模型，相比于用全光谱建立的模型，月挂酸的成分预测均方根误差分别从7.9557提高到6.6787，机油分类的成分预测均方根误差从0.2383提高到

MA Zhihong, LI Jinguo. Designing technique for antivibrating and antishocking of military equipment ［J］.Equipment Environmental Engineering,2006, 3(5):7073.［3］ ZHAN Jiakai,DING Hui,NING He,et al.

由试验结果还得到，安装减振器前，A点响应的总均方根加速度值为4.205 g，安装减振器后，总均方根加速度值为1.779 g，减振效率达到57%。

Ricker wavelet whose dominant frequency varies from 50 Hz to 300 Hz is chosen as the excited signal.

从大庆长垣南地区层状地质模型入手，选择Ricker子波为激发信号，主频从50-300Hz系列变化，根据各层的v0和β值计算地层的均方根速度，由均方根速度换算层速度。

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。