数学模型

Air cushion surge chamber ; numerical modeling ; water hammer pressure ; model test in vacuum tank

气垫式调压室；减压模型；数学模型；水击压力

At this time, the interaction between the two phased would promote each other. This phenomenon is just like the "sympathetic vibration" in mechanical engineering.

最后，在前面二维模拟的基础上，建立了三维气粒两相湍流流动数值模拟的数学模型，并用此模型对气粒两相气粒两相矩形射流进行数值研究。

To understand this paradox, we have formulated a mathematical model of activity-mediated synapse elimination.

为了了解这种矛盾情况，我们建立了一个活动介导突触排除模型的数学模型。

Deducing material balance equation for unstructured grids based on percolation theory, where absolute permeability is in tensor form.

对CVFE网格，用有限元方式表达折算压力得到相应的数学模型，提出了新的上游权准则，使模型更为合理。

The analyzed results indicate that the established dynamic mathematical model for Texaco gasifier in this paper is accurate and credible, and proved that the simulation model is practical.

分析结果表明本文建立的数学模型准确可靠，仿真模型具有较强的实用性。

The process of titania growth and crystallization from solution was discussed, and the corresponding mathematical model was also set up.

探讨了TiO〓粒子自溶液中析出和生长的过程，建立了相应的生长数学模型，并根据模型进行了计算机模拟。

From the lifespan of relay point of view, a reliability criterion was provided based on dynamic characteristics of anti-forces. Mathematical model of tolerance design with reliability was set up under usage of "stress-strength interference method", taken some critical dynamic characteristics as identification objects such beginning of contact separation speed, speed of collision and gag bit impact velocity. This model showed that lower values of characteristic parameters center and quantitative descriptively relationship between tolerance and product reliability. Multi-objective optimization model of relay tolerance distribution was completed when some factors such as reliability, processing costs and its feasibility into consideration. Based on Analytic Hierarchy Process to determine weight coefficients of various objectives, and usage of simulated annealing, this study performed optimal reliable tolerance allocation of space electromagnetic relay, and then key technology segments were analyzed, accompanying its course measured by controlling chart.

从继电器电寿命的角度，基于动态吸反力特性的配合提出了继电器的可靠性判别准则；在此基础上以触点分离初速度、触点碰撞速度以及衔铁碰撞速度等关键动态特性为判别对象，采用"应力-强度干涉法"建立了继电器可靠性容差设计数学模型，给出了下位特性参数中心值及其容差与产品可靠度之间的定量描述关系；综合考虑可靠度、加工成本及加工可行性等因素建立了继电器容差分配的多目标优化模型，基于层次分析法确定了各目标的权重系数，并采用模拟退火法实现了航天电磁继电器的可靠性容差最优分配；研究了继电器的关键工艺环节，并通过控制图对其过程能力进行了分析。

Firstly, the disadvantageous of the present system' in operation was analyzed and the relevant automaton state diagram was painted. Furthermore, according to the finite automaton is a useful model, the new automatic system, that is, the toll collector system by charging to the account was designed and the relevant automaton state diagram was painted.

首先分析了现行的自动收费站系统中的不足之处，画出了相应的自动机状态转移图，然后依据有穷自动机是一种具有离散输入输出系统的数学模型，提出了新的收费站自动机设计－记账式收费自动机的模型及相应的自动机状态转移图，进而给出了详细的分析和应用软件，并画出了相应的系统模块图。

Third, the application of MAOST is extended to the surface of 3-D rotary object to measure which formulas of coordinates transformation in cylindrical coordinates are given, and a useful algorithm is put forward to calculate those complicated formulas.

本文建立了多孔径扫描拼接测量的物理模型和数学模型，提出孔径拼接的本质是坐标变换，导出了直角坐标下测量大型平面物体面形的坐标变换公式，在此基础上进行了大平面测量的计算机模拟和实际干涉测量，结果表明，当孔径放大系数为2.34时实测精度优于λ/60。

And based on its results, a new kind of simulation frame of gas turbine engine is proposed.

分析了发动机控制系统的故障模型，特别是对执行器故障的数学模型进行了描述。

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。