A nebula is really a discrete mass of innumerous stars.
一团星云实际上是无数星体不连续的集合体。
According to Finite Element Method, the impactor is considered as a discrete mass system in terms of 3D solid element with initial velocity, and 2D shell element is used for target plate.
首先采用有限元法，将撞击体离散成由三维实体单元构成的具有一定初始速度的离散质量系统，对靶板采用二维壳单元离散。
A finite volume method was utilized to perform a discrete solution for the equations of mass, chemical components, momentum and heat energy conservation.
利用有限体积方法对质量、化学组分、动量和热量守恒方程进行离散求解。
From the view of VMIB, the solid materials was consisted of discrete and random mass particles.
VMIB模型认为：固体材料在微观尺度上是由离散的随机分布的质点(带有质量的微粒)组成。
Based on discrete algorithm, rapid algorithms for geometric mass property calculation are presented in this paper, which are very useful in products' parametric preliminary configuration design.
本文针对参数化总体设计，提出了基于离散算法的物性快速求解算法，解决了参数化设计中常见的几何特征值快速算法问题。
According to the feature of mass discrete data, an efficient retrieval method is stated by referring to the philosophy of distributive database, parallel computing, grid computing and multi-threading.
本文针对海量离散数据的特点，借鉴分布式数据库、并行运算、网格计算及多线程的思想，提出了一套海量离散数据快速检索方法。
Both the general spring coefficient matrix of flexible connector and the mass matrix of discrete element are off-diagonal.
推导出一般情形下柔性连接元的广义弹簧系数矩阵和刚体元的质量矩阵都是非对角的。
The vibrational spectra of two special patterns for H2O ground electronic state were investigated using discrete variable representation (DVR) scheme in mass-weighted coordinates.
在质量加权坐标系下用离散变量表示(DVR)方案研究了H2O基电子态2种特殊振动模式的振动光谱。
In this paper, a discrete local transmitting boundary is combined with a lumped-mass finite element technique for simulating steady wave motion in the viscoelastic layered medium.
本文将离散的局部透射边界与集中质量有限元方法相结合，用于模拟粘弹性成层介质中的稳态波动。
It's known that the discrete element method well considers the discontinuity character of rock mass, and can be used to analyze the joint rock mass.
而离散元法正是充分考虑到岩体结构的不连续性，适用于解决节理岩石力学问题。
Study on the model of the seepage of rock mass based on the continuous model and discrete medium network model of the seepage.
基于现有连续、离散介质渗流模型，进行岩体渗流计算模型研究。
This paper establishes the general recurrence steps of using difference method for the frequency equation and mode shapes of discrete multi-mass shear structures.
以船舶辅机的梁式隔振结构为对象，运用模态分析方法和自适应算法，推导并分析了梁式结构振动主动控制的基本原理和方法。
This paper deals with the numerical analysis of fracture mechanics for rock engineering. Some basic considerations have been taken for special application to rock mass with discrete joints.
本文论述了岩体工程中断裂力学数值分析的原理，阐明了在含断续节理的岩体中进行这种分析的基本方法和一般步骤。
This paper deals with the numerical analysis of fracture mechanics for rock engineering. Some basic considerations have been taken for special application to rock mass with discrete joints.
本文论述了岩体工程中断裂力学数值分析的原理，阐明了在含断续节理的岩体中进行这种分析的基本方法和一般步骤。
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