数学模型

In order to evaluate service benefit of torrential rain forecasting quantitatively, a mathematical model was build with forecasting accuracy, percentage of coverage, time validity and damage preventability.

暴雨是江苏的重要气象灾害之一，为了对暴雨预报气象服务效益作出恰当的评估，我们设计了预报准确率V、预报服务覆盖率P、预报服务时效率N、可能预防能力Z等四个指标，给出了定量评估暴雨预报气象服务效益的数学模型，并且用实例说明了该模型的实用性和可操作性。

The general variation principle of tension of web offset presses while running was discussed. The mathematical model of tension control was established. Based on the mathematical model and Matlab software, the tension control system simulation program was developed.

对卷筒纸印刷机在印刷过程中张力变化的一般规律进行了研究，建立了较符合实际情况的张力变化的一般规律数学模型，并用Matlab软件对模型进行仿真分析。

The mathematical model of risk probability of the criteria of river diversion is established.

分析了影响导流标准风险的各种不确定性因素，建立了施工导流标准风险率的数学模型，并通过对风险率模型性质的研究，给出了风险率的点估计和区间估计的计算公式。

On the basis of separation density and probable error or imperfection, the quartile skewness and a parameter K that has the meaning of kurtosis are advanced. With above four characteristic values, a mathematical model called quartile model has been set up.

在分选密度、可能偏差或不完善度的基础上，引入了四分位偏度系数和类峰度系数K，直接用上述四参数构造了一个分配曲线数学模型-四分位模型。

Originating from the principles of projective and perspective transformation, the models of coordinate transformation between workpiece and camera with arbitrary angle of laser light and camera are presented.

对电弧光的干扰进行了深入的研究，建立了电弧干扰的光照模型；依据透视变换理论，给出了光源倾斜照射和摄像机倾斜接收情况下，被检测物体与摄像机之间的一般坐标变换数学模型。

On the basis of analyzing pump-jet propulsor, inside flow fields are numerically simulated by using the software FLUENT, on the condition of setting up the physical models and the mathematic models and determining the boundary conditions.

在分析泵喷射推进器的基础上，建立了其数值仿真的物理模型和数学模型，确定了求解的边界条件，利用CFD软件FLUENT对泵喷射推进器的内流场进行了数值仿真。

Based on the analysis of a group of gait plates of quadrupedal animals, the conformity and continuity among all gaits from crawl through gallop are revealed. A unified mathematical model of various gaits is established, which forms the basis of further study of analysis and control of gaits.

通过对四足动物步行运动步态的图片资料的分析，揭示了动物从爬行到奔跑之间各步态在时序上的一致性和在步态参数上的连续性的内在规律，建立了这些步态统一的数学模型，该模型可作为动态步行运动分析和控制的基础。

Based on the science idea of coupling, this paper studied systematically the theory, mathematical model and technology of rock mass hydraulics in coal mining above aquifer, the numerical simulation method, the resemble simulation theory and method. A series of reciprocity law on the stress and displacement of upper and down floor of coal layer, coal pole, fault and the law of water pressure variety was analyzed thoroughly and particularly. Based on the relation of hydraulics character of multi-aquifer, the inspecting and predicting theory model, method and system of water outburst was founded. By used in the colliery, The results were ratified by colliery missionary. In situ test for the hydraulics character of the floor on hydrology observation hole was done.

本文基于固流耦合作用的学术思想，通过理论研究、相似模拟实验、数值分析及现场实际应用，系统研究了带压开采的块裂介质岩体水力学数学模型，数值模拟方法，相似模拟理论与方法，深入细致地分析了带压开采中项底板、煤柱、断层的应力位移分布、含水层水位变化等一系列相互作用规律，并建立了基于多含水层水力联系的底板突水监测预报理论模型及其监测预报方法与系统，并将研究成果应用于现场实际，得到了现场工作人员的一致认可。

Taking a copper mine as an example,based on geostatistics theory and method,a mathematic model and an entity engineering model have been established by using mining software,with some variance function representing regionalized variable characteristics.

以某铜矿为例，基于地质统计学理论和方法，应用能够反映区域化变量特征的变异函数，利用矿业软件，建立了矿山矿床的数学模型和工程实体模型。

Objectives. To derive a smooth mathematical function representing the sagittal spinal curve from individual vertebral elements. To generate normative data using this model.

目的。从独立的椎体的矢状椎体曲线数据中获得一种能彻底表现其功能的数学模型，并且通过这种模型，我们可以模拟它的最基本的特征。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷