查询词典 finite dimensional

The two-dimensional transient finite element analysis and thermal responsecalculation were carried out for prestressed concrete box girder with irregular crosssection. Various boundary conditions were discussed in detail.

在有限单元分析中，首次推导出混合边界单元的计算公式，从而将第二类边界条件和第三类边界条件统一起来，以第三类边界条件的形式施加到单元边界上。

1Finding out the principles of the two-dimensional finite element method for temperature field simulation of high power laserThe profile and boundary conditions of the chip and submount of the high power laser is simply, we adopt the right-angled triangle cell to divide the submount and chip of the laser into triangular elements.

1找到了适用于大功率半导体激光器温度场模拟的二维有限元规则大功率半导体激光器芯片与载体具有规整的外形和多个边界条件，所以我们对激光器载体和芯片都采用了直角三角形单元进行有限单元剖分。

Three-dimensional space finite element method is adopt, and an universal FEM software-ANSYS is used to parametrically design and analyze ball mill model.

采用三维空间有限元模拟方法，利用当前最流行通用的有限元模拟软件—ANSYS对球磨机进行了参数化建模和有限元分析计算，对球磨机筒体产生的应力进行了模拟。

In this paper, the mechanisms of the generation, migration and production for coal seam gas are researched and the geological model for coal seam gas reservoir simulation is presented, according to the theories and methods of coal seam gas geology, petroleum geology and dynamic of fluids through porous media. A three-dimensional, dual-porosity, two-phase, pseudo-steady, non-equilibrium sorption mathematical model is established with the help of petroleum reservoir numerical simulation method. After that, this complex mathematical mode is approximated and solved by finite-difference and fully implicit methods. Coal Seam Gas Reservoir Simulation software in 1. 0 version (CSGRS 1. 0) with Chinese interface of pre-and post-processing function is developed.

本文应用煤层气地质学、石油天然气地质学和渗流力学等学科的理论和方法，研究了煤储层中煤层气的生成、储集、运移和产出机理，概化出了煤层气储层模拟的地质模型；以油气藏数值模拟和数值计算方法为工具，建立了描述三维、双孔隙、非平衡吸附、拟稳态条件下气-水两相流体混相运移规律的煤层气储层模拟的数学模型；详细推导出了该数学模型的全隐式求解方法；并借助计算机技术开发了具有中文操作界面的煤层气储层数值模拟软件CSGRS 1.0，实现了这一复杂数学模型的数值求解。

AIM: To construct a three-dimensional finite element model of human mandibular alveolar atrophy, which uses to analysis the biomechanical characters of atrophic alveolar ridge.

目的：利用螺旋CT建立牙槽嵴萎缩的下颌骨三维有限元模型，用于萎缩牙槽嵴的生物力学分析。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。