查询词典 numerical coding

The key elements and techniques of the numerical wind tunnel are studied and analyzed.The basic idea of CFD is expatiated and the whole working process is presented.Discrete methods of the control equations based on the finite volume method and the PISO algorithm about the fluid numerical computation are researched also.

对基于CFD的数值风洞关键基础和技术进行研究分析，阐述了CFD的基本思想，研究了基于有限体积法的控制方程的离散方法以及流场的数值求解的PISO算法。

Organization: Manufacturing Engineering Institute, Chongqing UniversityAbstract: Based on the influences of opposite clearance on computer numerical control machining, the CNC code precompensation method of the CNC machining opposite clearance is introduced, and the precompensation process of opposite clearance is also introduced. The vector operation rules are used to research the algorithm of precompensation, and the proposed algorithm has been applied in a special numerical control equipment.

摘 要：在分析反向间隙对计算机数控（computer numerical control，CNC）加工影响的基础上，提出一种数控加工反向间隙的数控代码预补偿法，给出了反向间隙预补偿流程，并采用向量运算规则进行了预补偿实现算法研究，所提算法已在某专用数控设备上得到应用。

The velocity-stress pseudospectral method, an efficiently numerical modeling method, is easy to implement, with a high computation efficiency and can overcome numerical diffusion of the frequency efficiently.

模拟结果表明，伪谱法是一种有效的地震波数值模拟方法：易于实现，计算速度快、计算效率高，其计算速度是有限差分方法的数倍，能有效克服数值频散。

This paper uses a physical model to check the reliability of the numerical modeling proposed by Chen. As an example, this paper deals with a horizontal well pumpage underneath a river bed, or a vertical well adjacent to the bank of the river. We use the numerical method of Chen to simulate the groundwater flow pattern of the physical model.

论文针对具有典型意义的河床下水平井或傍河垂直井地下水流问题做了砂槽物理模拟，并用基于&渗流－管流耦合模型&和&等效渗透系数&的数值方法仿真模拟了此条件下地下水流的规律。

The numerical calculations of quaternion matrices The quaternionic quantum mechanics is a new coming disciplines of physics, because of noncommutation of quaternions, some numerical calculation methods of quaternion and quaterinon matrices are complicated and tedious.

四元数矩阵的数值计算问题四元数量子力学是近十几年来才发展起来的一门新兴的物理学科，由于四元数乘法的不可交换性，使得四元数量子力学中的四元数数学理论基础，特别是有关四元数问题的数值计算方法很不完备。

The movement of the Near-Earth Asteroids has been roundedly studied in this dissertation by means of different viewpoints, such as the selection of the dynamical models and the adoption of the numerical methods, then the problems of the NEAs' close Earthapproaching, together with the resonances during their orbital evolution, have also been investigated from numerical and theoretical viewpoints.

本文从不同的角度较全面地研究了近地小行星的运动问题，其中包括了对力学模型的选取、数值方法的采用以及从数值和理论的角度研究了近地小行星与地球的交会问题以及近地小行星轨道演化中出现的共振问题。

As for the first, I think that Plato claims a kind of ontology, which has numerical character, in the second part of the Parmenides. This ontology provides deliberately the cosmogony of the Timaeus and the theory of the Principles in the Unwritten Doctrines that could justify the possibility of the phenomena that are saved by Forms. This possibility lies in the god's nous and will, i.e. the world that has numerical character is fashioned by the god with Forms as model, and then the becoming phenomena that cling to the receptacle are saved and intelligible.

关於第一个论题，笔者认为，柏拉图在《巴曼尼德斯篇》第二部分的八组推论当中提出一种具有数特徵的存有论，这个存有论绵密、细致地论说《蒂迈欧篇》里的宇宙生成论以及「未成书研究」里的原理论，在这当中，相拯救现象的可能性乃在於---神以其意愿与睿智将相形塑於这个数存有的世界并因此使那些在场域里生灭变化的现象获得一致性，如此，神的意愿

Numerical calculation of the unsteady flow within turbomachinery The periodic unsteady flow within impeller/vaneless diffuser or impeller/vaned diffuser was numerical simulated in this thesis. The simulation was calculated on the CFX software flat.

离心风机内部非定常流动的数值模拟本文对叶轮/无叶扩压器和叶轮/有叶扩压器两种结构形式的离心风机内部流动进行了全流场非定常流动数值模拟。

Based on numerical computation, glass microfiuidic chips are fabricated, and experiments using microfluid fluorescence visualization technology are conducted to study sample electrophoresis transport characteristics in microchannel turns, with the aim to verify results of numerical computation.

在数值计算的基础上，制作了玻璃微流控电泳芯片，采用荧光可视化微流体实验技术，在微流控动态观测平台上实验研究了弯曲微通道中的样品电泳输运特性，验证了数值计算结果的正确性。

Consequently, numerical results are used to reveal the effects of the dielectric superstrate to the characteristics of the antenna and are compared with the results from pub-lished references and other numerical solutions for demonstrating the accuracy of the analysis.

最终，通过数值结果揭示出了覆盖介质层对天线特性的影响并且与已发表文献及其他数值方法的结果进行对比，证明了方法的正确性。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。