累积误差

The selection step is meticulously planned, a small step but will result in cumulative error too large.

步长的选取也是很有讲究的，过小的步长反而会导致误差累积过大。

Control network with the control of the situation, limiting the role of cumulative error, is the basis and foundation survey.

控制网具有控制全局、限制误差累积的作用，是各项测量工作的基础和依据。

Experimental results show that the algorithm can segmentalize ROI effectively, CR is higher than 30, PSNR of the whole image is higher than 42 dB, and the object keeps original fidelity. Inter-frame CR is about 7, background has cumulative error and PSNR is higher than 40 dB.

实验结果表明，该算法在帧内能有效地划分感兴趣区域，压缩率在30以上，峰值信噪比在42dB以上，目标无失真；帧间压缩的压缩率在7左右，背景区域有误差累积，但整体图像的峰值信噪比都在40dB以上，目标无失真。

Model 2:Model 1 can predicts various indicators of the regional population, but the parameters trends to uncertainty during the long-term, and the cumulative effect of error is significant.

模型一能得到关于各区域人口的各项指标，但在对人口长期趋势进行预测时，模型一中各参数存在较大的不确定性、且误差的累积效应明显，在进行长期预测时达到人口高峰后一直下降，不再有波动，这与实际历史上的三次高峰不符合，故在模型二中挖掘数据内在的相关信息，利用2001-2005年中国国家统计年鉴数据及模型一中短期预测的人口总数建立灰GM(1，1)模型对我国人口总数进行长期预测。

In test data modeling, the test data distribution was analyzed, the models of these data were set up respectively based on the hypothesis of Gaussian stationary process and non-Gaussian process.

对试验数据建模时，根据对火控动态精度误差数据的分析，分别基于高斯平稳随机假设和非高斯随机假设建立AR模型，两种模型性质不同，后者采用高阶累积量估计模型参数。

The paper explained the courses of logical measuring operation, diagram processing, and error analysis designed by Visual Basic 6.0, which made the operation simple and the display of diagrams accurate and legible.

通过Visual Basic 6.0语言设计合理的测量操作、图表处理及误差分析界面的过程，使操作简单，图表显示准确清晰，实现对1~2级超精密齿轮齿距累积总偏差测量装置的改进及其自动测量系统的设计。

An improved Schur multistep method has been presented for controlling error severely cumulating and increasing computational accuracy.

为解决刚性问题中导函数项的"病态性"（导函数中同时含有较大参数和较小参数），本文提出了一种改进的Schur积多步法，数值实验表明，该方法能很好地抑制误差的急剧累积，与原方法相比，计算精度得到较大提高。

The principal components in PCA is decided by virtue of cumulative percent variance and multi-correlation coefficients. The improved PCA is applied to mycetozoan fermentation process monitoring and fault diagnosis.

利用主元相关变量残差统计量代替平方预测误差Q统计量，并采用累积方差贡献率及复相关系数确定PCA模型的主元数。

As to the difficulty of simultaneous estimation for frequency factors (k_0) and activation energies as well as the difficulty of many parameters to be estimated at the same time, the activation energies of the same kind catalyst and empirical activation energies are adopted, hence the number of parameters is reduced to half.

所采用的简化处理方法大大降低了参数估计难度，但引入了误差并将累积到频率因子上。

Using RCT can resolve the problems of inaccurate time and the cumulating among most time controller s.

采用无线控制授时技术，解决了大部分时间控制器的时间控制不精确，误差累积严重的问题，且成本低，电路简单。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。