有限维的

Using two-dimensional finite-difference time-domain method, the optical fields of solid immersion lens are studied when illuminated by focusing gauss beam.

采用二维时域有限差分(2D-FDTD)方法研究了高斯光束通过固体浸没透镜的光场分布特性。

On the basis of Ohm's and Kirchhoff's law, The mathematic model that can be used to caluculate the 3—D current distribution in alumina reduction cell was derived, and the computer program was compiled by finite differential method.

根据欧姆定律和基尔霍夫定律，用有限差分法导出了求解铝电解槽内三维电流分布的数学模型，编制了计算程序，在国内首次较准确地计算了铝电解槽内三。。。

Onedimensional platelike dendritic model was built to describe the microsegregation during binary alloy solidification with finite solid backdiffusion and complete diffusion in the liquid.

建立了描述二元合金凝固的平面枝晶一维微观偏析数学模型，考虑溶质在固相中有限扩散，在液相中完全扩散。

Research on deep anti-sliding stability and reinforcement of entirety polygonal line gravity dam;2. The 2D Elastoplastic Finite Difference Method is adopted to analyze the deep anti-sliding stability for the dam foundation of Longkou hydropower station factory dam.

采用二维有限差分程序对龙口水利枢纽混凝土重力坝厂房坝段进行深层抗滑稳定分析，采用强度折减方法，根据特征点位移突变临界破坏判据和止水帷幕部位夹层错动量达到1mm临界破坏判据分别得出了厂房坝段的两个深层抗滑稳定安全系数。

We obtain the asymptotic estimates for the Bergman kernels and Bergman metrics (3-d case) for a class of higher dimensional pseudoconvex domains of finite type.

对于一类高维有限型拟凸域，我们得到了Bergman核和三维时Bergman度量的渐进估计。

Based on FDTD method,a two dimensional model for metamaterial volume with regular triangle,quadrangle and hexagon structure under light irradiation was presented.

基于时域有限差分方法，建立了光波辐射下正三角形、正四边形和正六边形无耗异向介质柱的二维电磁模型。

The diurnal, semidiurnal and shallow-water tides and tidal currents in che Bohai Sea are computed using finite-difference method based on two-dimensional nonlinear tidal wave equations.

本文采用二维非线性潮波微分方程组的有限差分方法同时计算了渤海全日、半日和浅水潮。全日和半日潮计算结果与实测符合良好。

Dendrite growth has been simulated with the phase field method and finite difference schemes on a two dimensional rectangular domain with a uniform square mesh.

采用相场模型和有限差分方法，模拟了过冷纯金属熔体的枝晶生长，计算区域为二维正方形均匀网格。

The paper discusses the software and hardware design of intelligent streetlamp controller based on ATmega64 and its application.

绵阳市维博电子有限责任公司产品开发部，四川绵阳 621000 阐述基于ATmega64智能路灯控制器的软硬件设计以及应用。

In general, the key measure to pipeline recovering is grouting, which means grouting in subjacent bed to raising the pipeline.

以北京地铁黄庄站下穿热力管道抬升注浆工程为研究对象，利用三维有限差分数值方法分析了新建车站开挖引起超大管道的变形特征。

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。