查询词典 limit of error

Simulation results show that, for the fixed sampling frequency, the error rises with the frequency increasing of periodic signal, and decreases with the attenuation time constant increasing of non-periodic signal. The sampling frequency determines the upper limit of appropriate frequency band directly. The research provides the basis for the selection of cutoff frequency in filter design.

仿真结果表明，在采样频率确定时，对于周期信号，计算误差随频率的增加而增大，而对于非周期信号，计算误差随衰减时间常数的增大而减小，采样频率大小决定了插值法用于分布参数模型的适用频带上限，该研究为滤波器设计中截止频率的选择提供了依据。

The the probabilistic forecasting method of the error between the sample mean and expectation value of the random variable utilizing the central limit theory was researched, then the mathematical formula for the relation between sampling size and variance coefficient of loss of load probability was analyzed. Furthermore, the formulas for the relation between confidence intervals of variance coefficient and sampling size are deduced.

基于中心极限定理深入研究随机变量的样本均值与期望值之间误差的概率预测方法，在此基础上分析失负荷概率(loss of load probability，LOLP)指标的方差系数和样本容量之间的关系表达式，导出方差系数给定时的样本容量置信区间公式及样本容量给定时的方差系数置信区间公式。

The adaptive program is calculated by T-B stress recovery scheme and z-z error estimation, the error is estimated by energy norm of difference of recovery stress and meshless stress. If the local relative error exceeds the limit relative error, then new nodes will be generated at the high error area.

本研究的自适应方法采用TB应力平滑技术和Z-Z误差估计，利用平滑应力和无网格法所得应力解差值的能量范数来估算误差，如果局部相对误差超过了允许误差，则在高误差域插入新的离散点进行加密。

In terms of error analysis (by error scatter band method and confidence limit Intervals method respectively) for the correlation between estimated PSF and measured PSF values, it was obviously founded that PSF value could be evaluated highly accurately by in strumentation method, according to the suitable empirical equation.

估算值与实际测量值所进行的误差离散性与置信区间的分析结果表明，选用合适的经验演算法可以在试验过程中即时获得高度可靠的PSF结果。

The major results are summarized as follows: When there is initial error only or model parameter error only in the Lorenz system, the error growth and predictability limit are comparable between two kinds of error problems. This result holds basically for the wide range of parameter space of Lorenz system.

结果表明：在初始误差和参数误差单独存在时，系统的可预报期限随误差大小的变化规律基本上相同；对于相同的误差大小，初始误差和参数误差对系统可预报期限的影响几乎相同，这一结果基本上不随参数范围的变化而变化。

When the size of initial error is close to that of model parameter error, they both contribute to the predictability limit of Lorenz system.

在后两种情况下，在考虑初始误差对可预报性影响的同时还必须考虑参数误差的作用。

And the error limit of flux sensor under 5%, the error limit of intelligent Heat Meter up to grade 2 according to the precision criterion of heat meters.

基于MSP430单片机的智能热量表满足《中华人民共和国城镇建设行业标准CJ128-2000热量表》的标准要求，电源采用内装3.6V锂电池，使用寿命超过八年；流量传感器误差限不超过5％，总体热量表精度达到2级精度标准。

Fourthly, taking three groups of water quality data of Jinhe River as original data, prediction to water quality of the river was made. Compared with real monitored value, the error of predicted value of all of simulating terms, including dissolved oxygen, bio-chemical oxygen demand, chlorophyll a, organic nitrogen, ammonia nitrogen, nitrite nitrogen, nitrate nitrogen, organic phosphorus, dissolved phosphorus and temperature, were basically within error limit of 20%, which validated the validity of the model.

第四，以津河三组水质数据为原始数据，通过建立的模型对津河水质进行预测，水质变量溶解氧、BOD、叶绿素、有机氮、氨氮、亚硝酸盐氮、硝酸盐氮、有机磷、溶解性磷和温度的预测值与实际监测值均在所设定的误差范围20%之内，验证了模型的有效性。

Firstly, several kinds of schemes were proposed according to the design demand. The best scheme was chosen after analyzing and comparing the schemes. The robot's structure was designed with Pro/Engineer and AutoCAD software. Secondly, the kinematics analysis conducted, coordinate transformation matrix using D-H method was set up, and the kinematics equation direct solution and inverse solution was deduced. The manipulative interface about the kinematics equation direct solution and inverse solution was completed with VC++ and the velocity Jacobian of displacement matrix was constructed using differential transform method. In the process of the trajectory planning based on robot's kinematics analysis, I propone a method by which we can get middle nodal point with normalizing factor in order to simplify our searching for these middle nodal points. In addition, I give these middle nodal points with actual physics signification. For eliminating contradiction between real-time and accuracy, I bring forward separately limit of error and reversal interpolation method. For decreasing calculation quantity, we resort to tri-spline interpolation in the articulation space.We analyse the work range of the robot by resorting to graphic means.

首先，作者针对机器人的设计要求提出了多个方案，对其进行分析比较后，选择其中最优的方案后用Pro/Engineer和AutoCAD软件进行了机器人模型结构设计；其次，进行了运动学分析，用D-H方法建立了坐标变换矩阵，推算了运动方程的正、逆解，运用VC++制作了正、逆运动学求解的求解界面；并且用微分变换法推导了速度雅可比矩阵；在基于机器人的运动学的轨迹规划中，通过在操作空间的规划，提出了归一化因子来求解中间结点，通过它可以使求解中间结点变得更简单，并且赋予这些中间结点实际的物理含义，对于规划中精确性和实时性的矛盾，提出了以误差极限法和反向插值法来解决的方法；为了减少规划过程中计算量，在关节空间进行三次样条插值；然后借助图解法进行工作空间分析，作出了实际工作空间的轴剖图。

A large mode area core erbium doped K9-glass single-mode photonic crystal fiber is designed by getting the pump and signal intensity profiles from plane wave expansion methodand solving propagation-rate equations.Its diameter is 20μm,limit ellipticity error is 94.7%,and limit offset of inner ventage is 0.1μm.Then we analyze its amplifier characteristics.

根据平面波展开法给出泵浦光和信号光本征模场分布，结合速率方程和功率传输方程设计一种大单模尺寸的实芯掺铒K9玻璃大模式面积单模光子晶体光纤，芯径为20μm；分析其椭圆度容差为94.7%，最内层小孔最大允许偏移量为0.1μm；分析了掺铒K9玻璃光子晶体光纤放大器的放大特性。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。