查询词典 numerical calculation

The Shanghai number permanent RJ mold has made the limited companyto be established since 1996, established Wicks the brandseries mold, passes through more than 10 years development, hasestablished the leading status in the national mold profession,unceasingly grows along with the company, we already become from thenumerical control knee bend mold to the numerical control ZTCM ＆ the plate cutter bit omni-directional numerical controlplate work processing equipment cutting tool mold supplier.

上海急招大中专毕业生，月薪5000，企业订单培养100%推荐就业——赞助商链接上海数恒刃具模具制造有限公司自1996年成立以来，创立了威克斯品牌系列模具，经过十多年的发展，已在全国模具行业确立了领先地位，随着公司不断成长，我们已经成为从数控折弯模具到数控转塔冲模及剪板机刀片的全方位数控钣金加工设备刀具模具的供应商。

In the paper, based on reading and studying a great number of references about fluid dynamic technique and numerical computing methods of flow field, 3-D Numerical simulations and visual analysis of the flow field in hydraulic poppet valve with inside flow work condition were obtained by CFD software Fluent.

本文在参阅大量国内外有关计算流体力学和流场数值计算方法相关资料的基础上，用CFD软件Fluent对内流工况液压锥阀内部流场进行了三维数值模拟及可视化分析。

Cavitations is the major problems of designing water hydraulic valve, understanding the relationship between shape of valve and cavitations , avoiding cavitations is extremely important, this paper, the numerical simulation and visualization research of flow field is carried out to research relation between the flow field of poppet valve and the length of valve seat by finite volume numerical method.

气穴是研制水压阀存在的主要难题，认识阀口形状与气穴的关系，避免产生气穴现象是极其重要，本文应用有限体积数值计算方法针对阀座倒角长度变化对水压阀阀道内流场的影响进行数值模拟和可视化研究，得到了一些有益的结论：倒角长度的改变对阀口间隙以及阀芯锥面与柱面相接的地方的负压会产生比较大的影响

In test total pressure at entrance of nozzle and thrust are measured, which are calculated by numerical simulation and are good agreement with experimental data. So numerical simulation in this paper is very exact and effective.

测试了固体燃料冲压发动机喷管入口处的总压和推力变化，并与数值计算进行了对比研究，理论与试验结果吻合很好，说明了数值计算的正确性和有效性。

By practical engineering case,numerical analysis is done,and the natural frequency and the response to impact of the system are obtained.The numerical results show that the elastic deformation of the raft body will affect the dynamic character of the system,and the proposed model is more precise and judicious in engineering application.

结合具体的算例，求出了弹性浮筏隔振系统的固有频率和对不同冲击激励的响应，指出了筏体的弹性变形对系统动力学性能的影响，揭示了弹性模型的全面性和合理性。

In this paper, the study about the interactionbetween the solar wind disturbance and the current sheet is mainly carried out intwo aspects: First, the characteristic propagating of this kind of CMEs erupting inthe open magnetic field between two helmet streamers has been studied by theMHD numerical simulation. Second, the Hall effect during magneticreconnection has been studied respectively through numerical simulating andtheoretically analyzing. And some of its characteristics have been discussed inthe aspect of the interaction between the disturbance and the sheet current.

论文主要从两个方面研究了太阳风扰动和电流片的相互作用：其一，对爆发在两冕流结构间的CME的传播特点进行了MHD数值模拟研究；其二，对磁重联过程中的Hall效应进行了数值模拟研究和理论分析，从扰动和电流片相互作用的角度初步探讨了Hall效应的一些特征。

After analyzing and studying the over all structure of ordinary C6163 lathe, we use numerical control technology to re-equip ordinary C6163 lathe for automation and precision. We attach the numerical control device and execution elements to the lathe and choose an appropriate machinery servo-system and computer system.

摘 要：本次毕业设计的题目是 C6163型车床的经济型数控改造设计，应用数控技术对C6163普通车床进行自动化和精密化改造，改造技术主要为：在车床上附加数控装置和执行元件，选择合适的机床伺服系统和计算机系统等。

Based on the linear wave-making numerical method, the investigation on nonlinear wave-making numerical method by using a Rankine source method is presented in this paper.

本文在线性兴波数值方法的基础上，利用Rankine源法开展了非线性兴波数值方法的研究。

Then the numerical simulation model of the oil pollutant migration in this kind of water-bearing system is constructed by means of the numerical simulation technology.

在分析水文地质条件的基础上，利用实验研究获得含水系统中连接上下含水层的弱透水层的渗透规律，然后运用数值模拟技术建立起此类含水系统中石油类污染质运移数值模拟模型。

Secondly, conception of vortex board was introduced, the numerical simulation was implemented on vortex tube, numerical simulation method was verified of valid by compared with experiment results.

其次，引入涡流板概念，对涡流管进行数值模拟，对比数值模拟和试验结果，验证了数值模拟方法的可靠性。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。