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Both silhouette preserving and shading preserving criteria are satisfied by applying a new error metric-constrained normal cone to view-independent simplification.

算法为地表的简化提出一种新的基于受限法向锥的误差计算方法，使得模型简化具有轮廓保持和光照保持特性。

To evaluate the precision of solutions obtained by modal series method, normal form method and linear modal method, an error index describing the approximation to the nonlinear simulation is defined and then applied to the same system.

为比较模态级数法、正规形法和线性模式分析法所得解对时域仿真解的逼近程度，定义一误差指标，并在4机2区系统中做相关分析。

According to capital s exchanging-value metaphysics, being or not-being, object or not-object, person or non- person, truth or error, being or nihility, living or dead, all these are decided by the exchanging-value.

根据资本的交换价值形而上学，存在与非存在、对象与非对象、人与非人、是与非、有与无、生与死，都完全取决于交换价值大小。

If the description provided is NULL, the function checks if it can obtain some error information by itself.

如果所提供的描述是NULL，函数检查是否可以通过本身的一些错误信息。

This paper illustrated how to distinguish initial numberical date s precision by means of combination method and error method,which can find out initial numerical dates lower precision point and adjust rupidly.

本文在多年工作实践中分析出产生这种情况的几个原因，提出了用组合法与尝试法对起算数据精度进行判别的方法，能较快地发现起算数据相对精度较低的点，快速进行 GPS网平差。

In order to ensure the reasonable modeling method for thermodynamics model, by adopting these four kinds of models and the reference model, the typical thermodynamics characteristic in drum-the dynamic process of"false level"were dynamically simulated, the results of simulation indicate: The modeling method of considering the changing rates of pressure and volume simultaneously is more reasonable, it's simulation result can be consistent with the result of the reference model, and the numeric error is within±5%, so, this method can be used to build thermodynamics model of drum level.

为确定合适的热力学模型建模方法，采用这四种模型和参考模型，对汽包中典型的热力学性质-"虚假水位"现象的动态过程进行了动态仿真，结果表明：同时考虑汽包体积变化率和压力变化率的建模方法，其动态仿真结果完全可以正确地跟踪参考模型的仿真结果，并且数值误差在5%以内，故该建模方法可以用来建立汽包水位热力学模型。

The accompanying value is a pair containing the numeric error code from errno and the corresponding string, as would be printed by the C function perror.

在发生错误将引发异常。accompanying 值包含错误代码和错误描述文本，用于使用 C 程序 perror 打印。

A new empirical heattransfer relation is then obtained by correlating with the experimental data,and the compari-son is made with the numerical value,The error turns out to be small.

通过对传热实验数据的整理，关联出一新的经验关系式，并将其与理论分析数值计算的结果进行了比较，两者的误差较小。

Based on practically stable principle, this paper extends the concept of sliding mode to sliding zone attraction and presents a new velocity observer for robotic tracking control It can guarantee observational error is irrelative to motion trajectory. By means of it, a robust controller is further derived.

本文基于实际稳定性原理，推广了滑动模控制，提出了滑动域吸引性设计思想，并以此设计了机械手速度观测器，以及基于观测器的机械手输出反馈控制系统，与以往观测方案不同的是，这一观测器可以保证其观测误差与机械手运动轨迹无关。

By numerical simulations of occultation eve: its, it is proved that the new method not only has a simple mathematical expression and the minimum computer time consuming, but also a lower computation error.

它的研究成果将在国民经济、大气科学研究和高新武器的发展中起重要的作用。从而成为当前空间探测技术的研究热点之一。

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。