查询词典 model theory

The thesis mainly includes: According to crane dynamic theory, established relevant dynamic model, and analyzed the dynamic properties of the bridge structure of the bridge crane, including the natural frequency, the model shape and the dynamic stress. A way to analyse the dynamic response of the bridge structure of the bridge crane which takes into account the dynamic properties of the steel rope pulley block has been explored successfully.

本文基于有限元理论和起重机动力学理论，以有限元分析软件ANSYS为平台，实现了计算机对钢丝绳系统和桥架的模态分析和瞬态动力学分析，得到的分析数据和结论对桥式起重机动态设计提供了有效的手段，论文主要内容包括：根据起重机动力学理论，建立了相关动力学模型，并对桥架结构进行动态性能分析（包括固有频率、振型以及动应力）的分析，探索出一种考虑钢丝绳滑轮组的动态特性在内的桥式起重机桥架结构动态应力分析的方法。

Aiming at these problems, therandom course model of resisting force which has taken several factors into accountand the random course model of load which has taken the influence of re-serve terminto account are putted forward based on the dynamic reliability theory.

最后，为实现鉴定规程软件化工作的一部分，迅速准确地对建筑物可靠性进行评估，本文依据现有规程《民用建筑可靠性鉴定标准》，编制了《民用建筑可靠性鉴定软件》，以便工程使用。

A mathematical model of airlift-loop reactor was developed with the two-fluid model and the theory of two-phase flow.

采用双流体模型和气液二相流体动力学理论建立了气升式环流反应器流体流动的数学模型，在此模型的基础上利用溶质渗透理论和各向同性湍流理论建立了局部液相体积传质系数数学模型。

A mathematical model of airlift-loop reactor was developed with the two-fluid model and the theory of two-phase flow.

气升式环流反应器ALR具有结构简单、操作方便、流型规整、特别是不需要机械搅拌就能得到良好混合效果和较高传质系数的优点，广泛地应用于生物、环境及化学工业[1]。

The nonlinear threshold curing model and the exposure equivalent theory are proposed, and a mathematical model is developed for the SL process parameters.

设计并实现了LPS600A商品化激光固化成型机的控制软硬件系统，对SL成型机理、成型工艺以及激光扫描控制进行了系统的理论分析和实验研究。

On the basis of thermoviscoplastic theory, the dynamic recrystallization model of tension was constructed. This model was introduced into the finite element analysis of tension of AZ31 magnesium alloy sheet by changing temperature.

摘 要：基于热粘塑性本构理论，构建拉伸动态再结晶理论模型，并将该模型引入AZ31镁合金薄板变温拉伸的数值仿真。

In this dissertation, the characteristics of the OFDM wireless channel are modeled and simulated, the work as follow has been completed.(1) Based on studying the theory of the spread of wireless channel, the characteristics of wireless channel are analyzed, the models of a variety of fading channel are established, and the model of the wireless channel with tap delay line and Jakes channel model are designed.

本文主要是对OFDM系统无线信道特性进行建模与仿真，完成了以下工作：(1)在研究了无线信道传播理论基础上，分析了无线信道传播特性，建立了各种衰落信道的结构模型，设计了无线信道抽头延迟线模型和Jakes仿真模型。

The main contents and results of research in this paper are shown as following: It is important to built the motion model of a virtual system. As the virtual object is the submarine in this simulation system, we studied on the motion model of the submarine and gave the submarine six DOF space motion equation MultiGen-Paradigm corporation's modeling software named Creator is used, the modeling of all entities and 3D terrain in virtual ocean environment is accomplished. Then introduced the theory of Large Area Database Management and realized the Large area database management; In the course of 3D scene simulation, Vega is utilized to develop the project. The building of 3D scene is done, which includes the simulation of static and dynamic ocean surface, realization of ocean wave, simulation of bow wave and stern wake, utilization of lighting and material, simulation of cloud and fog, kinematics' modeling of submarine etc.

论文的主要研究工作和成果包括以下一些内容：建立虚拟对象的运动模型是构造一个虚拟系统的关键所在，建立的运动模型准确与否直接关系仿真对象模拟的逼真度，由于本仿真系统的虚拟对象是潜艇，所以对潜艇的运动模型进行了研究，给出潜艇空间六自由度运动方程；利用MultiGen-Paradigm公司的Creator建模软件完成虚拟海洋环境中个实体模型建模和三维海底地形模型的建模；然后介绍了大地形数据库管理(LADBM，Large Area Database Management)技术的基本原理，实现大地形数据库管理；在三维场景仿真中，使用Vega驱动软件进行软件开发，完成了三维场景空间的建立，主要包括动态和静态海洋的仿真、海浪、船首波浪和传尾尾迹的实现，灯光和材质的使用，云和雾的模拟等。

A predictive model for silica scaling was established according to the solubility product theory.The model was used to predict the quantity of silica scaling in the test site of Xingbei Oilfield in Daqing area.

基于试验区地层岩石及流体特点，对碱、表面活性剂、聚合物及三元复合体系在相关条件下的动态、静态水-岩反应进行了模拟试验，以确定这些因素对成垢作用的影响。

According to reliability theory of man-machine system and locomotive driving behavior chains, the locomotive single-driver's driving behavior model is set up based on perception, judgment, executive components and their modules, then the double-driver's driving behavior model is also established by integrating the characteristics of double-driver's driving behavior.

在人机系统可靠性理论与机车驾驶行为链的基础上，结合双司机作业特点，构建了基于感知、判断、操作元件及模块组的单司机及双司机驾驶行为模型。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。