查询词典 be in error

In addition, there was some difference in cycle between self – generating sine signal and the actual electrical network, so the great accumulated error and non synchronous error will be presented after several cycles.

另外，由于在传统的傅立叶系数数值求解时，微处理器进行离散化，所用的内部产生的正弦信号周期不能与实际电网周期完全相等，因此在多个电周期后，会有较大的积累误差和非同步误差。

Almost all error message boxes can be eliminated. If you examine the situation from the point of view that the error message box must be eliminated and that everything else is subject to change in search of this objective , you will see the truth of this assertion.

几乎所有的错误消息框都可以去掉，如果你从"错误消息框必须消除，以及所有其他的事情也必须因为这个目标而改变"的角度审视这种情况，你会发现这种判断完全正确。

IMU signal which is in ground coordinate system transforms to output in missile coordinate system through transformation matrix, and considering the constant error of inertial component, white noise, and random error, the IMU signal in missile can be simulated.

IMU在地面系下的投影，通过转换矩阵转换为弹体系下的输出，再考虑到惯性器件常值误差﹑白噪声与随机误差的影响，即可模拟IMU在弹体内的输出。

Result］ It could be concluded through analyzing the model that both the mass uncertainties of quinoline phosphomolybdate precipitates and tested samples were from the resolving power and precision of balance and its maximum tolerance in assay certificate; the uncertainty brought in by volumetric flask was from the permissible error of 250 ml volumetric flask, the operation of increasing the volume to scale of volumetric flask while diluting solution and the difference between experimental temperature and the temperature at the time when the volumetric flask was calibrated; the uncertainty brought in by pipette was from the permissible error of itself, the operation of increasing the volume to intake scale while taking solution and the difference between experimental temperature and the temperature at the time when the pipette was calibrated.

结果］磷钼酸喹啉沉淀和试样质量的不确定度均来自天平的分辨力、精确度、鉴定证书上天平的最大允差，容量瓶引入的不确定度来自250 ml容量瓶本身的允许误差、稀释溶液时将体积增加到容量瓶刻度的操作和试验温度与容量瓶校准时温度的差异，吸量管引入的不确定度来自于吸量管本身的允许误差、吸取溶液时将体积增加到吸取刻度时的操作和试验温度与吸量管校准时温度的差异。

A new switching scheme to the gain of variable structure control signals is proposed. The following important open problems in standard VS-MRAC and MRAC are solved by using the scheme: 1 . a prespecified transient and steady-state performance index for tracking error can be achieved without requiring any information about the plant high frequency gain sign when relative degree of modelled part of plant is one, and 2 . it is shown that as long as the performance indexes are guaranteed for the auxiliary errors, each of which in dynamics is a sub-system with relative degree one, the tracing error will converge to a small residual set in a prespecified transient time when relative degree of modelled part of plant is greater than one.

提出了一种控制增益可切换的变结构自适应律，解决了如下变结构模型参考自适应控制（包括基于调参律的模型参考自适应控制）理论研究中长期没有解决的问题：当对象建模部分相对阶为1、高频增益符号未知且存在非线性输入扰动和未建模动态等情况下，系统跟踪误差可满足预先给定的动态和稳态性能指标；当对象建模部分相对阶大于1且存在非线性输入扰动和未建模动态时，可保证系统跟踪误差在预先给定的过渡过程时间内收敛到一个残差集中； 5。

The experimental results indicate that the instrument error can be more completely separated using the researched method in the paper. So, the precision measurement for the cylindricity error can be realized.

实验结果表明，本文提出的圆柱度误差分离及重构方法可以比较完整地分离出仪器误差，从而实现圆柱度误差的精密测量。

Due to the fact that the intercarrier spacing in OFDM is relatively small, OFDM transceivers are somewhat more sensitive to phase noise compared to single carrier transceivers. Thus this problem must be carefully considered in designing an OFDMbased system since an accurate prediction of the tolerable phase noise can allow designer to relax system specifications. According to spectrum theorem, two components of phase noise were analyzed: common phase error and intercarrier interference. On the basis of the analysis, the performance of OFDM was given for the case where phase noise has been added to the signal, and an optimal design criterion for OFDM parameters was proposed that allows to improve the phase noise error correcting capabilities in OFDM receiver.

由于采用子载波间相互正交的结构，OFDM系统对于由本地振荡器不稳定性所导致的相位噪声影响非常敏感，针对公共相位误差CPE和载波间干扰ICI两种影响表现形式不同的干扰项，从功率谱密度函数这一独特角度分析了相位噪声对OFDM系统性能的影响，提出了旨在提高接收机抵抗相位噪声能力的OFDM系统关键参数优化与设计准则，可在对所设计OFDM系统性能加以提高的同时，有效降低对接收机前端模拟振荡器件和相位噪声抑制单元的性能指标要求，从而降低接收机硬件实现成本。

The error of the center distance can be adjusted, in addition, the error of nonparallel degree also can be adjusted in horizontal plane and vertical plane. Meanwhile, we also may take out the middle adjustability mechanism, make it become general gear transmission mechanism system.

该实验装置，既可以调整输入、输出轴的中心距误差，也可以调整输入、输出轴在水平面和垂直面的平行度误差，同时，可以去掉中间的自调机构，变成一般的齿轮传动机构系统。

Meanwhile, comparative analysis indicates that the same weighting function will be produced between the proposed methods for motion error measurement and the ordinary frequency domain three-point method for straightness error measurement, and the homology and unitarily in nature will be confirmed.

权函数的对比分析表明：先行分离出运动误差的单信道或多信道二次相移数据重组法与先行分离出形状误差的普通频域三点法具有相同的权函数，它们在本质上具有同源性和统一性。

The error of the elongation is 2.3%, by the multi-dimension linear regression model, the relative error are from ? 5% to ? 15% respectively. Comparing the results, it can be found that the neural network overmatches the multi-dimension linear regression. So that, the model can be used in the production of the marine propeller aluminum bronze.

计算结果表明，三项输出的预测值与实测数据接近，抗拉强度和屈服强度的相对误差在±1％的范围以内，延伸率的最大绝对误差为2.3％，明显优于多元线性回归模型±5％—±15％的误差，能较好地满足工程应用的要求，对高强度船用螺旋桨铝青铜的生产具有一定的指导意义。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。