数学模型

This paper reported a new method using tangential curvature to establish a mathematical model of the anterior cornea and an analysis of the regularity of the distribution of the asphericity Q. The curvature in the horizontal meridians is a prolate ellipse. The curvature in the vertical meridians is an oblate ellipse. The curvature of the horizontal meridians is important for anterior corneal asphericity.

本研究分析了运用正切曲率半径值建立人眼前表面角膜数学模型的科学性，显示角膜前表面水平子午线方向非球面性趋向于长椭圆，垂直子午线方向非球面性趋向于扁椭圆，说明人眼角膜的非球面性特性主要由水平子午线实现。

Using the optimum theory, this paper inquires into how to build the unit assemblage system mathematical model.

利用最优化理论，研究了在汽车性能模拟中的一个重要问题：建立汽车有关总成系统的数学模型。

In this paper, the capital risk management of international construction by means of risk analysis is described. First, the traditional theories of capital risk analysis are discussed in detail. Then, possible capital risks in international construction contracting are analyzed and assessed systematically.Third,a series of mathematical models of assessing capital risks are established after analyzing the cash flow of the project. Based on the analysis mentioned above, computer simulation programs are developed.

将风险分析技术用于国际工程资金管理领域，在总结以往的风险分析理论的基础上，通过对国际工程承包资金风险的辨识、估计和评价，结合对工程现金流分析，系统分析了国际工程承包中可能遇到的风险，建立了一组资金风险评价的数学模型，并结合计算机模拟技术，编制了风险模拟计算程序。

The paper proposes a new theory method for target assignment in command control system of air defence.

就防空作战中使用多种防空武器时的目标分配问题建立了数学模型，并给出了具体算法，为防空指挥控制系统中的目标分配提供了新的理论方法。

Mathematical models were used to compute the water assimilative capacity of river segments, upon which a plan is proposed for controlling pollution in the basin.

通过数学模型计算了河段的水环境容量，并据此提出流域内水污染控制措施。

Dynamic model of satellite is built up with astronomic method, and a short-arch forecast arithmetic of satellite orbit in short arch with single site is given, which is of high precision when only angle data is available.

本文使用了天文方法建立了人造卫星运动的数学模型，给出了一种只使用单站短弧段测角数据对人造卫星轨道进行高精度预测的算法。

The mathematical model of a pneumatic force control system with an asymmetric servovalve and a single-acting cylinder were described.

分析了非对称气动伺服阀控单作用气缸的气动压力控制系统的数学模型。

Based on the mathematical model of STATCOM in asymmetric power system, the effects of the DC storage capacitor on the performances of STATCOM are analyzed in detail in this paper.

以新型同步补偿器STATCOM在系统不对称情况下的数学模型为基础，详细分析了在系统不对称条件下直流侧储能电容器容量对STATCOM性能的影响。

A sufficient condition of the analytical solution of the system which is asymptotically stable is derived.

其中 ，中立型方程为电网的能量耗损等问题提供了有效的数学模型。

Asynchronous motor's model is the basic for simulation and analysis.

异步电机数学模型是仿真和分析的基础。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。