计算误差

In this paper,the basic theory of precision estimation about lateral piercing errors in the GPS network of railway tunnel has been discussed. According to the theory, the software for computation has been made and tested with data.

探讨了隧道GPS网在设计阶段估算横向贯通误差的基本理论，对按该理论编制的软件进行了计算正确性的验证。

Base on the theory and calculational method of infrared thermograph,the test method and data processing method for surface-type infrared decoy area and the error factors in affected measurements are researched in the article. The test method is simple and facile.

本文针对红外热像仪的测量原理和计算方法，对面源红外诱饵面积的测试方法、数据处理方法及影响测量的误差因素进行了研究。

By analysing and calculating the variations in distribution of axis direction contact force and contact pressure on screw thread, the influence of errors of pitch and taper of casing screw threads to the properties of resisting pull and sealing liquid and gas are studied. Based on the result obtained through analysis, a reasonable tolerance distribution for pitch and taper is proposed.

最后，本文通过分析计算内外螺纹不同的螺距、锥度参数配合时，轴向载荷及接触压力在螺纹上分布的变化，研究了套管螺纹的螺距、锥度参数误差对套管螺纹接头的拉伸和密封性能的影响，并依据分析结果提出了二参数公差带的合理分布。

This paper mainly studied the key technology of weight and centre of gravity accuracy control of offshore structures and floaters, developed structural design of weight and centre of gravity data base and realized its main function by using VB and ACESS. And the tolerance distribution calculation formula of weight and centre of gravity of offshore structures and floaters was worked out by utilizing dimension chain principle. The dynamic adjustment and control method of weight and centre of gravity tolerance during construction was raised.

文中重点研究海洋结构物空船的重量、重心精度控制技术的关键技术，开发了重量、重心数据库的结构设计，采用VB和ACESS实现了该数据库的主要功能；应用尺寸链原理推导了海洋结构物空船重量、重心公差分配计算公式；提出了在建造过程中进行重量、重心误差的动态调整控制方法。

The resistance calculation method of HYSWAS while foil borne is accurate and the error of the total resistance is under 4

论文提出的HYSWAS翼航状态阻力计算方法具有较高的精确度，总阻力的误差在4%以内

This model can be used to separate the installment position error with higher precision. The total error is no more than 0.4 μm.

由数学模型、评定方法和计算引入的误差之和小于0.4μm，充分证明了算法的可靠性、可行性。

The relation between the total pressure ratio and discharge coefficient is studied.

筛选出一种齿形进行实验研究，计算与实验变化规律一致，误差为10.87%。

Besides,the trapezoidal method and parabolic method is used to make approximate calcalation and error estimate of the integral.

同时 ，用梯形法和抛物线法对此积分作了近似计算和误差估

This thesis concerns convergence theorems and truncation error bounds for all kinds of continued fractions with applications to matrix function computation.

这扁论文讨论了各类连分式的收敛性与误差估计以及它在矩阵函数计算方面的一些应用。

The stability condition and local truncation error for the schemes are discussed.

对求解三维热传导方程利用待定参数法构造出一族对称的含参数的，截断误差为O的便于计算的三层显格式，并讨论了其条件稳定性。

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。