查询词典 numerical system

Based on application of 3D body-fitted numerical grid with a curvilinear coordinates system and the theories about turbulent flow and the laminar flow, the new techniques that the independent variables were expressed by co-variable velocities were applied to solve the problems about flow around a high-speed car body for the first time.

采用当今数值新技术，较为全面和深入地研究了高速汽车车身绕流问题。本文依据k-ε双方程湍流模型和附面层理论，采用先进的曲线坐标系下的贴体与边界正交数值网格技术，首次把以协变速度分量作为独立变量的数值技术运用于汽车车身绕流问题的求解。

In the paper,by using Fourier Series,basic harmonic balancing approximation and optimum numerical iterration,the response computation of a two-degrees-of-freedom dry friction damped vibration absorber system with velocith-dependent variable coefficient of sliding friction under harmonic excitation is discussed.

研究了两自由度滑动摩擦系数随相对速度变化的干摩擦吸振系统简谐激励响应计算问题，提出了最优化处理方法，并推导了相应的迭代方程。

The present project of "deepsea processes and records" targets at the ignored aspects of the theory. Combining the geological records with climatic numerical modeling, we recognized the stepwise process of development of the "Western Pacific Warm Pool" and the East Asian monsoon system, and found that the sea surface warming in the Warm Pool was leading the melting process of the boreal icesheet during the deglaciation.

本项目以"西太平洋暖池"为重点，通过地质资料和气候数值模拟的结合，揭示了"西太平洋暖池"和东亚季风发育的阶段性，发现了暖池海区冰消期表层水升温超前于北半球冰盖的融化。

Exact formulae for bit error probabilities of the considered system are derived, and a set of numerical results both for the exact formulae and Gaussian approximation are presented.

分析并得出了系统位错概率的数学模型，并给出了该模型和高斯近似模型的一系列数值仿真结果。

Given the fact that atmosphere is by no means a determinate system,this paper considers the numerical weather forecast in the view of information theory.

基于大气并非是一个确定论的系统，从信息论的视角考察了数值天气预报问题。

The research on the CCD sensor information is used to determinate the satellite attitude system without gyroscope .(1) Using quaternion and MRP as attitude representation , the attitude kinematics function are established . The satellite attitude dynamics function is established,that is disturbed by the first-order Markov force moment.(2) Using the quaternion as attitude representations, the attitude determination state estimator EKF and UKF are designed , numerical simulation is done .

基于CCD星敏感器的无陀螺测量卫星姿态确定系统的研究(1)针对地球同步轨道卫星，分别建立了以姿态四元数和修正罗德里格参数为卫星姿态描述参数的姿态运动方程；建立了卫星受一阶马尔柯夫干扰力矩时的卫星姿态动力学方程；(2)设计了采用姿态四元数为卫星姿态描述参数的EKF和UKF估计器，设计了分别以姿态四元数和修正罗德里格参数为卫星姿态描述参数的UKF估计器，并进行了数学仿真。

Generalized strictly diagonally dominant matrix play an important role in numerical algebra 、control theory 、electric system、economic mathematics and elastic dynamics and so on.

广义严格对角占优矩阵具有很广的实际背景，这类特殊矩阵在数值代数、控制论、电力系统理论、经济数学及弹性力学等众多领域中有着重要的实用价值。

The simulation instrument provide with diagrammatic emulation mode for numerical solutions of differential equation or design and research of dynamic characteristics in control system.

仿真仪为微分方程的数值求解或控制系统的设计反动态特性的研究提供了图示仿真仪器。

In addition, numerical examples are reported to verify the validity of the differential equation system.

最后我们给出了数值算例验证了该方法的有效性。

The theory system and numerical method is a new direct method.

该理论体系和数值方法是一种直接方法并可推广到其他领域。

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。