The theory and method of performance-based seismic design and the problem when it used in irregular structures were discussed in the text.
在阅读大量文献的基础上对结构基于性能的抗震设计在理论和方法以及在不规则结构中存在的问题进行了探讨。
Buildings can be classified into regular, normal irregular, beyond normal irregular and seriously irregular structures, according to the degree of irregularity.
建筑物按不规则程度可以分为：比较规则的结构、一般不规则结构、特别不规则结构和严重不规则结构。
The realistic of virtual reality is based on modeling, that is the reason why the simulation of irregular structures and elements become one of the most difficult research focus of computer graphics.
真实感图形模拟的基础在于建立模型，因而模糊物体的模拟一直是图形学的难点之一。
The shape factor is less for rounder or streamlined objects than for irregular or sharp-edged structures or elements .
对圆形或流线型的物体来说，形状图子要比不规则的或棱角分明的结构物或部件小得多。
The shape factor is less for rounder or streamlined objects than for irregular or sharp-edged structures or elements.
对圆形或流线型的物体来说，形状图子要比不规则的或棱角分明的结构物或部件小得多。
Irregular syntactic structures are linguistically universal in that they refer to different representations of the same word class in similar syntactic configurations.
不规则句法现象是相同词类的词在相似句法构造里的不同表达，它普遍存在于语言之中。
As for the large span steel roof structures of irregular shape, the wind load is one of the main control loads in the design.
对于体型复杂的大跨度钢屋盖结构来说，风荷载是控制结构设计的主要荷载之一。
The seismic response characteristics of vertical irregular base-isolated structures are analyzed by a practical example.
以一实际工程为例，分析了竖向不规则隔震结构的地震反应特点。
The data structures of DEM have five kinds of structure, including dispersed point, regular network, triangle irregular network, counter and mixing structure.
DEM数据结构有离散点结构、规则格网结构、不规则三角网结构、等高线结构和混合结构五种。
The probability distribution of irregular wave force has been disquisitive emphasis by reliability design and optimize design used in maritime structures.
随着以概率论为基础的可靠度设计和优化分析在海岸工程结构中的应用，不规则波浪力的概率分布成为研究重点。
The main structures in floating products are carbon nano-onions and irregular polygon particles, and they grew from isotropic carbon particles near gas bubble wall.
而水面漂浮物中的主要结构是碳纳米洋葱和不规则的多面体纳米颗粒，由各向同性的碳粒子在气泡壁附近形核并生长而成。
Pre stack depth migration which starts directly from undulating earth surface turns out to be a valid way to deal with irregular topography and complex geologic structures.
直接从起伏地表开始的叠前深度偏移方法是对付复杂地表和复杂地质构造成像的有效手段。
Shape and margin: Most tumors had an irregular shape with obscure margin, infiltrating around the structures of the eyeball, lacrimal gland, extraocular muscle, optic nerve and (or) bone.
形态边缘：肿瘤形态多不规则，边缘呈浸润状，沿眼球壁、泪腺、视神经、眼外肌、眶隔或眶壁蔓延生长。
This paper presents a new 3d finite-difference (FD) method using spatially irregular grids to simulate elastic wave propagation in heterogeneous anisotropic media with topographic structures.
提出一种新的三维空间不规则网格有限差分方法，模拟具有地形构造的非均匀各向异性介质中弹性波传播过程。
Field emission scanning electron microscopy images show that the SiC flower-like structures deposited by irregular hexagon.
场发射扫描电镜照片显示碳化硅主要有不规则的六角片堆积而成花状结构。
The main content of this thesis is lateral buckling analysis of thin-walled structures with irregular cross section by transformed 63 spline finite member element method.
本文主要分析了具有不规则横截面形状的薄壁结构在横向荷载下的稳定问题。
Two kinds of main data structures of the DTM are briefly introduced in the paper, which are irregular net of triangulation (TIN) and regular rectangular grid (grid).
文中简要介绍了DTM的两种主要的数据结构：不规则三角网(TIN)和规则矩形格网(GRID)。
The method possesses the advantages of flexibility in treating the wire structures with irregular shapes, and of the computer storage and CPU time requirements.
该方法在处理形状不规则的线天线或线散射器时，非常方便灵活，且所占计算机内存和所用计算时间较少。
The method possesses the advantages of flexibility in treating the wire structures with irregular shapes, and of the computer storage and CPU time requirements.
该方法在处理形状不规则的线天线或线散射器时，非常方便灵活，且所占计算机内存和所用计算时间较少。
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