查询词典 calculation error

In many cases, when the source number is not known in advance, the selected number in model may not be equal to that of the actual one. In respect of this problem, a calculation is also carried out, and a discrimination criteria is proposed based on results of inverse calculation.

在事先不能确定磁源数目时，对反演模型中选择的源数目与实际源数目不一致时的情况亦进行了计算，并根据反演结果中出现的不同情况给出了相应的判别准则。

This paper introduces the application of modern signals processing technology in MFL signals processing based on the models of forward calculation and inverse calculation,and finally describes the direction of further research on MFL testing technology.

介绍了漏磁检测的正演计算模型及反演计算模型，阐述了现代信号处理技术及其在漏磁信号分析中的应用，指出了漏磁检测需要进一步研究的内容。

The research of both theories and practices of gridding in the dissertation shows that: Linear interpolation based on triangulation is simple computationally and fast, but its gridding results isn't smooth and its precision is low; Multiquardric method is also simple computationally with high precision and good effect, but its gridding is slow because it is based on global calculation; Minimum curvature method is fast with high precision and good effect, but its gridding quickly degrades over areas with sparse data control when grid spacing smaller than the actual grid spacing is used; Ordinary Kriging method is high-precision, but its gridding is slow because of large calculation; Inverse interpolation is a computationally fast, efficient and robust method with high accuracy and perfect effect, and its gridding results of different gridding orientations are basically identical. Inverse interpolation is suitable for thegridding of geophysical irregular data, especially for large-scale geophysical irregular data.

本文的方法研究和数据试验分析表明：基于三角网的线性插值法计算简单，速度快，但其网格化结果不光滑，精度不够；多元二次函数法计算简单，网格化精度高，效果良好，但它是基于全局计算的，计算速度较慢；最小曲率法计算速度快，网格化精度高，效果良好，但其在稀疏控制点的网格化容易出现振荡现象；普通克里格法网格化精度高，效果良好，但其计算量较大，一般计算速度慢；反插值法网格化计算稳定，速度快，精度高，效果好，而且在网格化方向不同的情况下其网格化精度效果都达到基本一致，适合于地球物理不规则分布数据的网格化，特别是大规模地球物理不规则分布数据的网格化。

The present invention has simple and efficient calculation and rapid calculation speed, can meet requirement of resent field wavelet simulating far field wavelet, is convenient for estimating and regulating quality of air gun array and can obtain exact inverse wavelet operator and improve the distinguish of earthquake data.

本发明计算简单、有效，而且运算速度极快，完全能够满足近场子波模拟远场子波的要求。方便了对气枪阵列的质量评价和调整，可求取较为准确的反子波算子，提高地震资料的分辨率。

This paper introduces three traditional ways which are use coefficient lumimethod, power to square ratio method, inverse square law to do the lamination calculation for the representative room and deck, and do some contrast for the room which can use two way to do the calculation .

本文采用传统的三种照度计算方法：利用系数法、比功率法、逐点法对相应典型舱室和甲板进行了照度计算，对一些可以用两种方法计算的舱室的计算结果作比较并分析了原因。

The DRDC method has been improved in this paper.8 isometry transforms are added into the calculation of difference matrix of domain blocks and range blocks.The affine transform parameters,produced from the calculation of difference matrix,were used to calculate fractal codes corresponding to range blocks and a set of inference for formula was given.

对DRDC方法进行了改进，在定义域块与值域块的差值矩阵计算中，增加了8种旋转变换，并利用求解差值矩阵过程中产生的仿射变换参数来计算值域块所对应的分形码，并给出公式推导。

The calculation of urban water supply system is relative complicated in consideration of network s modeling, node demand calculation, initial flow distribution, forming of correlative matrix, universal programming, and drawing method of isopiestic line .

城市给水管网计算是一个较复杂的系统，从管网的建模、节点流量的计算、初始流量的分配、各相关矩阵的自动生成、具有通用性的平差计算到管网图形和等压线的绘制，需要考虑各种相关因素的影响。

When manual design calculation must undergo many times the iterative computation, very troublesome time-consuming, but using computer time, the design calculation is very convenient effectively.

在手工设计计算时要经过多次迭代计算，十分烦琐费时，而应用计算机时，设计计算就很方便有效。

This program for the power flow calculation of the Jacobian matrix program, but also the core of the power flow calculation.

详细说明：此程序为潮流计算中的雅克比矩阵程序，也是潮流计算的核心部分。

The results of lattice beam internal force calculated method based on double parameter groundsill model are more approach the experiment measured values because of consideration of the pass of shearing force in soil, and its calculated workloads are similar with the method of winkler elastic foundation. Besides, the thesis also discusses the moment of torque affected results on node stress situation and the correction of stress value at the bottom of cross node of lattice beam. Due to the repeat calculation of node area during internal force calculation, the stress value of the bottom of beam is lower, this may lead the calculated value unsafe, but the corrected stress value will more approach to practical situation.

对格构梁的内力计算提出基于双参数地基模型的格构梁内力计算方法，其计算结果表明，双参数地基模型上的格构梁内力由于考虑土中剪力的传递更加接近于试验实测值，其计算工作量与winkler弹性地基梁法相当，此外，文中还探讨了扭矩作用对格构梁节点受力情况的影响结果以及格构梁交叉节点底部的应力值的修正，由于内力计算过程中节点处的面积被重复计算，使得梁底应力偏小，可能导致计算结果的偏于不安全，修正后的应力值更接近于实际情况。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。